Recognised as Number
4,722
- Positive
- Even
- Composite
- 4 digits
4,722 is an even 4-digit integer and a composite number. It has 8 divisors and a digital root of 6.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value4,722
Digit count4
Digit sum15
Digit product112
Multiplicative persistence2times the digit product can be taken before one digit is left
Digital root6repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2 × 3 × 787
Distinct prime factors32, 3, 787
Number of divisors8
Sum of divisors σ(n)9,456
Aliquot sum4,734sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)1,572integers below n that share no factor with it
Carmichael function λ(n)786the smallest exponent with aˣ ≡ 1 for every unit; smaller than φ(n) = 1,572
Möbius function μ(n)−13 distinct prime factors, an odd number of them
SquarefreeYesno repeated prime factor
All divisors1, 2, 3, 6, 787, 1,574, 2,361, 4,7228 in total
Arithmetic
Previous number4,721
Next number4,723
Double9,444
Half2,361
Square22,297,284
Cube105,287,775,048
Square root68.71681017≈irrational, shown to 9 decimal places
Cube root16.776781986≈
Negation-4,722
Reciprocal0.0002117747≈
Representations
Decimal4,722
Binary100100111001013 bits
Octal11162
Hexadecimal1272
Base 363N6
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordsfour thousand, seven hundred and twenty-two
Ordinalfour thousand, seven hundred and twenty-second
Scientific notation4.722 × 10^3
Engineering notation4.722 × 10^3
In other bases
Ternary20110220base 3; the most digit-efficient integer base after e: 8 digits
Quinary122342base 5; one hand: 6 digits
Septenary16524base 7: 5 digits
Nonary6426base 9; each digit is two ternary digits: 4 digits
Duodecimal2896base 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 4 digits
Vigesimalbg2base 20; hands and feet, and the Mayan and Yoruba systems: 3 digits
Sexagesimal1:18:42base 60; Babylonian, and still how an hour and a circle are divided: 3 digits
Balanced ternary1T01110T0digits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary1011110110110base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
0001001001110010
Bit length13 bitsto write the magnitude
Set bits6the population count, or Hamming weight
Zero bits7within that length
Bit parityeven6 set bits, so even; not the same as the number itself being even
Highest set bitbit 12worth 4,096
Lowest set bitbit 11 trailing zero
Power of twoNo
Bytes212 72
Gray code1101101001011n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
16-bit0001001001110010
32-bit00000000000000000001001001110010
64-bit0000000000000000000000000000000000000000000000000001001001110010
One's complement1110110110001101at 16 bits, every bit flipped
Bits reversed0100111001001000at 16 bits
Rotated left by 10010010011100100at 16 bits, wrapping
Shifted left by 110010011100100= 9,444, no wrap
Shifted right by 1100100111001= 2,361, discarding the low bit
These bits as a double2.33297798 × 10^-320≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Nearest landmarks
Powers & multiples
4,722 to the power 222,297,284
4,722 to the power 3105,287,775,048
4,722 to the power 4497,168,873,776,656
4,722 to the power 52,347,631,421,973,369,632
First ten multiples4,722, 9,444, 14,166, 18,888, 23,610, 28,332, 33,054, 37,776, 42,498, 47,220
Powers of twoBetween 2^12 (4,096) and 2^13 (8,192)
Divisibility tests
Divisible by 2Yes
Divisible by 3Yes
Divisible by 4No, remainder 2
Divisible by 5No, remainder 2
Divisible by 6Yes
Divisible by 7No, remainder 4
Divisible by 8No, remainder 2
Divisible by 9No, remainder 6
Divisible by 10No, remainder 2
Divisible by 11No, remainder 3
Divisible by 12No, remainder 6
Divisible by 100No, remainder 22
Collatz (3n + 1) trajectory
Steps to reach 159the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps4,722 → 2,361 → 7,084 → 3,542 → 1,771 → 5,314 → 2,657 → 7,972 → 3,986 → 1,993 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage472,200%
4,722% as a decimal47.22
4,722% of 1004,722
4,722% of 1,00047,220
As a fraction of 1004,722/100
Read another way
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Derived from 4,722
Also reads as
4722 (year)
- Common year
- 365 days
- 48th century
- Tiger
4722 will be a common year of 365 days. It begins on a Sunday and ends on a Sunday. Easter Sunday falls on 9 April.
Structure of the year
Patterns forced by the calendar
Weekday counts52 of each, plus an extra Sunday365 days is 52 weeks and 1 day, and the remainder starts on the weekday 1 January falls on
Sundays53one of the extras
Mondays52
Tuesdays52
Wednesdays52
Thursdays52
Fridays52
Saturdays52
Friday the 13th2 of them13 January, 13 October
ISO weeks52an ordinary 52-week year
Same calendar as4711the most recent year whose calendar is identical, so a printed one could be reused
Calendar repeats in4733, 4739, 475011 years later, then again after that; the gap is 6, 11 or 28 years, broken by centuries that skip a leap year
Months of 4722
January31 days, starts Sunday
February28 days, starts Wednesday
August31 days, starts Tuesday
September30 days, starts Friday
October31 days, starts Sunday
November30 days, starts Wednesday
December31 days, starts Friday
Time references
These values depend on today’s date and change daily.
Unix timestamp at the start86,844,700,800
Unix timestamp at the end86,876,236,799
Years from now2,696 years from now
Days from today984,435 days to 1 January
The number 4722
As a number4,722
In wordsfour thousand, seven hundred and twenty-two
Roman numeralsNot defined above 3,999
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Also reads as
#447722 (colour)
- #447722
- Green
- Dark
- Nearest: Dark green
#447722 is a green with RGB values 68, 119, 34 and HSL 96°, 56%, 30%. It is a dark colour, so white text on it reaches 5.4:1 contrast (AA for normal text). The nearest named colour is Dark green.
Colour values
#447722#447722
HEX#447722
HEX (short)#472
RGBrgb(68, 119, 34)
RGB (0–1)0.2667, 0.4667, 0.1333
RGB percentages26.7%, 46.7%, 13.3%
HSLhsl(96, 55.6%, 30%)
HSV / HSBhsv(96, 71.4%, 46.7%)
CMYK42.9%, 0%, 71.4%, 53.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,486,946
CSS custom property--colour: #447722;
Brightness & contrast
Relative luminance0.14538WCAG 2.x, 0 is black and 1 is white
Perceived brightness99.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.37:1
Contrast with white5.37:1WCAG normal text: AA
Contrast with black3.91:1WCAG normal text: Fail
Greyscale equivalent#666666
Inverted#BB88DD
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.37:1WCAG large text: AAA
Contrast with black, large text3.91:1WCAG large text: AA
Named colours
Hue familygreen
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#552277
Analogous#6F7722, #22772B
Triadic#224477, #772244
Split complementary#2A2277, #77226F
Tetradic#226F77, #552277, #772A22
Tints, shades & saturation
Channel breakdown
R68
G119
B34
Red68 (26.7%)
Green119 (46.7%)
Blue34 (13.3%)
Hue96°
Saturation (HSL)55.56%
Lightness30%
Dominant channelGreen
Hex per channelR 44 · G 77 · B 22
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Harmonies
Similar named colours
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