Recognised as Number
572
- Positive
- Even
- Composite
- 3 digits
572 is an even 3-digit integer and a composite number. It has 12 divisors and a digital root of 5.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value572
Digit count3
Digit sum14
Digit product70
Multiplicative persistence2times 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 factorisation2^2 × 11 × 13
Distinct prime factors32, 11, 13
Number of divisors12
Sum of divisors σ(n)1,176
Aliquot sum604sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)240integers below n that share no factor with it
Carmichael function λ(n)60the smallest exponent with aˣ ≡ 1 for every unit; smaller than φ(n) = 240
Möbius function μ(n)0zero, because a prime divides n twice
SquarefreeNohas a repeated prime factor
All divisors1, 2, 4, 11, 13, 22, 26, 44, 52, 143, 286, 57212 in total
Arithmetic
Representations
Decimal572
Binary100011110010 bits
Octal1074
Hexadecimal23C
Base 36FW
Roman numeralDLXXII
In wordsfive hundred and seventy-two
Ordinalfive hundred and seventy-second
Scientific notation5.72 × 10^2
Engineering notation572
In other bases
Ternary210012base 3; the most digit-efficient integer base after e: 6 digits
Quinary4242base 5; one hand: 4 digits
Septenary1445base 7: 4 digits
Nonary705base 9; each digit is two ternary digits: 3 digits
Duodecimal3b8base 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 3 digits
Vigesimal18cbase 20; hands and feet, and the Mayan and Yoruba systems: 3 digits
Sexagesimal9:32base 60; Babylonian, and still how an hour and a circle are divided: 2 digits
Balanced ternary1T101TTdigits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary11001001100base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
0000001000111100
Bit length10 bitsto write the magnitude
Set bits5the population count, or Hamming weight
Zero bits5within that length
Bit parityodd5 set bits, so odd; not the same as the number itself being even
Highest set bitbit 9worth 512
Lowest set bitbit 22 trailing zeros
Power of twoNo
Bytes202 3c
Gray code1100100010n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
16-bit0000001000111100
32-bit00000000000000000000001000111100
64-bit0000000000000000000000000000000000000000000000000000001000111100
One's complement1111110111000011at 16 bits, every bit flipped
Bits reversed0011110001000000at 16 bits
Rotated left by 10000010001111000at 16 bits, wrapping
Shifted left by 110001111000= 1,144, no wrap
Shifted right by 1100011110= 286, discarding the low bit
These bits as a double2.82605549 × 10^-321≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Nearest landmarks
Powers & multiples
572 to the power 2327,184
572 to the power 3187,149,248
572 to the power 4107,049,369,856
572 to the power 561,232,239,557,632
First ten multiples572, 1,144, 1,716, 2,288, 2,860, 3,432, 4,004, 4,576, 5,148, 5,720
Powers of twoBetween 2^9 (512) and 2^10 (1,024)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 2
Divisible by 4Yes
Divisible by 5No, remainder 2
Divisible by 6No, remainder 2
Divisible by 7No, remainder 5
Divisible by 8No, remainder 4
Divisible by 9No, remainder 5
Divisible by 10No, remainder 2
Divisible by 11Yes
Divisible by 12No, remainder 8
Divisible by 100No, remainder 72
Collatz (3n + 1) trajectory
Steps to reach 1105the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps572 → 286 → 143 → 430 → 215 → 646 → 323 → 970 → 485 → 1,456 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage57,200%
572% as a decimal5.72
572% of 100572
572% of 1,0005,720
As a fraction of 100572/100
Read another way
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Derived from 572
Other readings
Also reads as
#557722 (colour)
- #557722
- Green
- Dark
- Nearest: Olivedrab
#557722 is a green with RGB values 85, 119, 34 and HSL 84°, 56%, 30%. It is a dark colour, so white text on it reaches 5.2:1 contrast (AA for normal text). The nearest named colour is Olivedrab.
Colour values
#557722#557722
HEX#557722
HEX (short)#572
RGBrgb(85, 119, 34)
RGB (0–1)0.3333, 0.4667, 0.1333
RGB percentages33.3%, 46.7%, 13.3%
HSLhsl(84, 55.6%, 30%)
HSV / HSBhsv(84, 71.4%, 46.7%)
CMYK28.6%, 0%, 71.4%, 53.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer5,601,058
CSS custom property--colour: #557722;
Brightness & contrast
Relative luminance0.1524WCAG 2.x, 0 is black and 1 is white
Perceived brightness103 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 5.19:1
Contrast with white5.19:1WCAG normal text: AA
Contrast with black4.05:1WCAG normal text: Fail
Greyscale equivalent#6A6A6A
Inverted#AA88DD
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text5.19:1WCAG large text: AAA
Contrast with black, large text4.05:1WCAG large text: AA
Named colours
Hue familygreen
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#442277
Analogous#776F22, #2B7722
Triadic#225577, #772255
Split complementary#222B77, #6F2277
Tetradic#22776F, #442277, #77222A
Tints, shades & saturation
Channel breakdown
R85
G119
B34
Red85 (33.3%)
Green119 (46.7%)
Blue34 (13.3%)
Hue84°
Saturation (HSL)55.56%
Lightness30%
Dominant channelGreen
Hex per channelR 55 · G 77 · B 22
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Harmonies
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