Recognised as Number
472,021
- Positive
- Odd
- Composite
- 6 digits
472,021 is an odd 6-digit integer and a composite number. It has 12 divisors and a digital root of 7.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value472,021
Digit count6
Digit sum16
Digit product0zero, because one of the digits is zero
Multiplicative persistence1times the digit product can be taken before one digit is left
Digital root7repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation11^2 × 47 × 83
Distinct prime factors311, 47, 83
Number of divisors12
Sum of divisors σ(n)536,256
Aliquot sum64,235sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)414,920integers below n that share no factor with it
Carmichael function λ(n)103,730the smallest exponent with aˣ ≡ 1 for every unit; smaller than φ(n) = 414,920
Möbius function μ(n)0zero, because a prime divides n twice
SquarefreeNohas a repeated prime factor
All divisors1, 11, 47, 83, 121, 517, 913, 3,901, 5,687, 10,043, 42,911, 472,02112 in total
Arithmetic
Representations
Decimal472,021
Binary111001100111101010119 bits
Octal1631725
Hexadecimal733D5
Base 36A47P
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordsfour hundred and seventy-two thousand and twenty-one
Ordinalfour hundred and seventy-two thousand and twenty-first
Scientific notation4.72021 × 10^5
Engineering notation472.021 × 10^3
In other bases
Ternary212222111021base 3; the most digit-efficient integer base after e: 12 digits
Quinary110101041base 5; one hand: 9 digits
Septenary4004104base 7: 7 digits
Nonary788437base 9; each digit is two ternary digits: 6 digits
Duodecimal1a91b1base 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 6 digits
Vigesimal2j011base 20; hands and feet, and the Mayan and Yoruba systems: 5 digits
Sexagesimal2:11:7:1base 60; Babylonian, and still how an hour and a circle are divided: 4 digits
Balanced ternary10T000T1111T1digits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary110110111010011010101base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
00000000000001110011001111010101
Bit length19 bitsto write the magnitude
Set bits12the population count, or Hamming weight
Zero bits7within that length
Bit parityeven12 set bits, so even; not the same as the number itself being odd
Highest set bitbit 18worth 262,144
Lowest set bitbit 00 trailing zeros
Power of twoNo
Bytes307 33 d5
Gray code1001010101000111111n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
32-bit00000000000001110011001111010101
64-bit0000000000000000000000000000000000000000000001110011001111010101
One's complement11111111111110001100110000101010at 32 bits, every bit flipped
Bits reversed10101011110011001110000000000000at 32 bits
Rotated left by 100000000000011100110011110101010at 32 bits, wrapping
Shifted left by 111100110011110101010= 944,042, no wrap
Shifted right by 1111001100111101010= 236,010, discarding the low bit
These bits as a double2.3320936 × 10^-318≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Nearest landmarks
Powers & multiples
472,021 to the power 2222,803,824,441
472,021 to the power 3105,168,084,016,465,261
472,021 to the power 449,641,544,185,535,948,962,481
472,021 to the power 523,431,851,328,000,864,165,219,244,101
First ten multiples472,021, 944,042, 1,416,063, 1,888,084, 2,360,105, 2,832,126, 3,304,147, 3,776,168, 4,248,189, 4,720,210
Powers of twoBetween 2^18 (262,144) and 2^19 (524,288)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 1
Divisible by 5No, remainder 1
Divisible by 6No, remainder 1
Divisible by 7No, remainder 4
Divisible by 8No, remainder 5
Divisible by 9No, remainder 7
Divisible by 10No, remainder 1
Divisible by 11Yes
Divisible by 12No, remainder 1
Divisible by 100No, remainder 21
Collatz (3n + 1) trajectory
Steps to reach 150the total stopping time
Highest value reached1,416,0643× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps472,021 → 1,416,064 → 708,032 → 354,016 → 177,008 → 88,504 → 44,252 → 22,126 → 11,063 → 33,190 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage47,202,100%
472,021% as a decimal4,720.21
472,021% of 100472,021
472,021% of 1,0004,720,210
As a fraction of 100472,021/100
Read another way
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Derived from 472,021
Also reads as
#472021 (colour)
- #472021
- Red
- Dark
- Nearest: Black
#472021 is a red with RGB values 71, 32, 33 and HSL 358°, 38%, 20%. It is a dark colour, so white text on it reaches 14:1 contrast (AAA for normal text). The nearest named colour is Black.
Colour values
#472021#472021
HEX#472021
RGBrgb(71, 32, 33)
RGB (0–1)0.2784, 0.1255, 0.1294
RGB percentages27.8%, 12.5%, 12.9%
HSLhsl(358.5, 37.9%, 20.2%)
HSV / HSBhsv(358.5, 54.9%, 27.8%)
CMYK0%, 54.9%, 53.5%, 72.2%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,661,281
CSS custom property--colour: #472021;
Brightness & contrast
Relative luminance0.02482WCAG 2.x, 0 is black and 1 is white
Perceived brightness47.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 14.03:1
Contrast with white14.03:1WCAG normal text: AAA
Contrast with black1.5:1WCAG normal text: Fail
Greyscale equivalent#282828
Inverted#B8DFDE
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text14.03:1WCAG large text: AAA
Contrast with black, large text1.5:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#204746
Analogous#472035, #473320
Triadic#214720, #202147
Split complementary#204732, #203547
Tetradic#354720, #204746, #332047
Tints, shades & saturation
Channel breakdown
R71
G32
B33
Red71 (27.8%)
Green32 (12.5%)
Blue33 (12.9%)
Hue358.46°
Saturation (HSL)37.86%
Lightness20.2%
Dominant channelRed
Hex per channelR 47 · G 20 · B 21
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Harmonies
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