Recognised as Number
3,722
- Positive
- Even
- Composite
- 4 digits
3,722 is an even 4-digit integer and a composite number. It has 4 divisors and a digital root of 5.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value3,722
Digit count4
Digit sum14
Digit product84
Multiplicative persistence3times the digit product can be taken before one digit is left
Digital root5repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2 × 1,861
Distinct prime factors22, 1,861
Number of divisors4
Sum of divisors σ(n)5,586
Aliquot sum1,864sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)1,860integers below n that share no factor with it
Carmichael function λ(n)1,860the smallest exponent with aˣ ≡ 1 for every unit coprime to n
Möbius function μ(n)+12 distinct prime factors, an even number of them
SquarefreeYesno repeated prime factor
All divisors1, 2, 1,861, 3,7224 in total
Arithmetic
Previous number3,721
Next number3,723
Double7,444
Half1,861
Square13,853,284
Cube51,561,923,048
Square root61.008196171≈irrational, shown to 9 decimal places
Cube root15.497398106≈
Negation-3,722
Reciprocal0.0002686728≈
Representations
Decimal3,722
Binary11101000101012 bits
Octal7212
HexadecimalE8A
Base 362VE
Roman numeralMMMDCCXXII
In wordsthree thousand, seven hundred and twenty-two
Ordinalthree thousand, seven hundred and twenty-second
Scientific notation3.722 × 10^3
Engineering notation3.722 × 10^3
In other bases
Ternary12002212base 3; the most digit-efficient integer base after e: 8 digits
Quinary104342base 5; one hand: 6 digits
Septenary13565base 7: 5 digits
Nonary5085base 9; each digit is two ternary digits: 4 digits
Duodecimal21a2base 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 4 digits
Vigesimal962base 20; hands and feet, and the Mayan and Yoruba systems: 3 digits
Sexagesimal1:2:2base 60; Babylonian, and still how an hour and a circle are divided: 3 digits
Balanced ternary1TT0100TTdigits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary1001110011110base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
0000111010001010
Bit length12 bitsto write the magnitude
Set bits6the population count, or Hamming weight
Zero bits6within that length
Bit parityeven6 set bits, so even; not the same as the number itself being even
Highest set bitbit 11worth 2,048
Lowest set bitbit 11 trailing zero
Power of twoNo
Bytes20e 8a
Gray code100111001111n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
16-bit0000111010001010
32-bit00000000000000000000111010001010
64-bit0000000000000000000000000000000000000000000000000000111010001010
One's complement1111000101110101at 16 bits, every bit flipped
Bits reversed0101000101110000at 16 bits
Rotated left by 10001110100010100at 16 bits, wrapping
Shifted left by 11110100010100= 7,444, no wrap
Shifted right by 111101000101= 1,861, discarding the low bit
These bits as a double1.83891233 × 10^-320≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Nearest landmarks
Powers & multiples
3,722 to the power 213,853,284
3,722 to the power 351,561,923,048
3,722 to the power 4191,913,477,584,656
3,722 to the power 5714,301,963,570,089,632
First ten multiples3,722, 7,444, 11,166, 14,888, 18,610, 22,332, 26,054, 29,776, 33,498, 37,220
Powers of twoBetween 2^11 (2,048) and 2^12 (4,096)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 2
Divisible by 4No, remainder 2
Divisible by 5No, remainder 2
Divisible by 6No, remainder 2
Divisible by 7No, remainder 5
Divisible by 8No, remainder 2
Divisible by 9No, remainder 5
Divisible by 10No, remainder 2
Divisible by 11No, remainder 4
Divisible by 12No, remainder 2
Divisible by 100No, remainder 22
Collatz (3n + 1) trajectory
Steps to reach 138the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps3,722 → 1,861 → 5,584 → 2,792 → 1,396 → 698 → 349 → 1,048 → 524 → 262 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage372,200%
3,722% as a decimal37.22
3,722% of 1003,722
3,722% of 1,00037,220
As a fraction of 1003,722/100
Read another way
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Derived from 3,722
Also reads as
3722 (year)
- Common year
- 365 days
- 38th century
- Dog
- 53 ISO weeks
3722 will be a common year of 365 days. It begins on a Thursday and ends on a Thursday. Easter Sunday falls on 19 April.
Structure of the year
Patterns forced by the calendar
Weekday counts52 of each, plus an extra Thursday365 days is 52 weeks and 1 day, and the remainder starts on the weekday 1 January falls on
Sundays52
Mondays52
Tuesdays52
Wednesdays52
Thursdays53one of the extras
Fridays52
Saturdays52
Friday the 13th3 of them13 February, 13 March, 13 November
ISO weeks53a long year: 1 January is a Thursday, or a Wednesday in a leap year, so a week 53 exists
Same calendar as3711the most recent year whose calendar is identical, so a printed one could be reused
Calendar repeats in3733, 3739, 375011 years later, then again after that; the gap is 6, 11 or 28 years, broken by centuries that skip a leap year
Months of 3722
January31 days, starts Thursday
February28 days, starts Sunday
August31 days, starts Saturday
September30 days, starts Tuesday
October31 days, starts Thursday
November30 days, starts Sunday
December31 days, starts Tuesday
Time references
These values depend on today’s date and change daily.
Unix timestamp at the start55,287,792,000
Unix timestamp at the end55,319,327,999
Years from now1,696 years from now
Days from today619,192 days to 1 January
The number 3722
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Also reads as
#337722 (colour)
- #337722
- Green
- Dark
- Nearest: Dark green
#337722 is a green with RGB values 51, 119, 34 and HSL 108°, 56%, 30%. It is a dark colour, so white text on it reaches 5.5:1 contrast (AA for normal text). The nearest named colour is Dark green.
Colour values
#337722#337722
HEX#337722
HEX (short)#372
RGBrgb(51, 119, 34)
RGB (0–1)0.2, 0.4667, 0.1333
RGB percentages20%, 46.7%, 13.3%
HSLhsl(108, 55.6%, 30%)
HSV / HSBhsv(108, 71.4%, 46.7%)
CMYK57.1%, 0%, 71.4%, 53.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,372,834
CSS custom property--colour: #337722;
Brightness & contrast
Relative luminance0.14013WCAG 2.x, 0 is black and 1 is white
Perceived brightness96 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.52:1
Contrast with white5.52:1WCAG normal text: AA
Contrast with black3.8:1WCAG normal text: Fail
Greyscale equivalent#626262
Inverted#CC88DD
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text5.52:1WCAG large text: AAA
Contrast with black, large text3.8:1WCAG large text: AA
Named colours
Hue familygreen
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#662277
Analogous#5E7722, #22773B
Triadic#223377, #772233
Split complementary#3B2277, #77225E
Tetradic#225E77, #662277, #773C22
Tints, shades & saturation
Channel breakdown
R51
G119
B34
Red51 (20%)
Green119 (46.7%)
Blue34 (13.3%)
Hue108°
Saturation (HSL)55.56%
Lightness30%
Dominant channelGreen
Hex per channelR 33 · G 77 · B 22
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Harmonies
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