Recognised as Number
800,508
- Positive
- Even
- Composite
- 6 digits
800,508 is an even 6-digit integer and a composite number. It has 24 divisors and a digital root of 3.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value800,508
Digit count6
Digit sum21
Digit product0zero, because one of the digits is zero
Multiplicative persistence1times the digit product can be taken before one digit is left
Digital root3repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2^2 × 3 × 19 × 3,511
Distinct prime factors42, 3, 19, 3,511
Number of divisors24
Sum of divisors σ(n)1,966,720
Aliquot sum1,166,212sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)252,720integers below n that share no factor with it
Carmichael function λ(n)3,510the smallest exponent with aˣ ≡ 1 for every unit; smaller than φ(n) = 252,720
Möbius function μ(n)0zero, because a prime divides n twice
SquarefreeNohas a repeated prime factor
All divisors1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228, 3,511, 7,022, 10,533, 14,044, 21,066, 42,132, 66,709, 133,418, 200,127, 266,836, 400,254, 800,50824 in total
Arithmetic
Representations
Decimal800,508
Binary1100001101101111110020 bits
Octal3033374
HexadecimalC36FC
Base 36H5OC
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordseight hundred thousand, five hundred and eight
Ordinaleight hundred thousand, five hundred and eighth
Scientific notation8.00508 × 10^5
Engineering notation800.508 × 10^3
In other bases
Ternary1111200002110base 3; the most digit-efficient integer base after e: 13 digits
Quinary201104013base 5; one hand: 9 digits
Septenary6542562base 7: 7 digits
Nonary1450073base 9; each digit is two ternary digits: 7 digits
Duodecimal327310base 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 6 digits
Vigesimal50158base 20; hands and feet, and the Mayan and Yoruba systems: 5 digits
Sexagesimal3:42:21:48base 60; Babylonian, and still how an hour and a circle are divided: 4 digits
Balanced ternary1TTTTT0001T110digits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary111000100101100001100base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
00000000000011000011011011111100
Bit length20 bitsto write the magnitude
Set bits12the population count, or Hamming weight
Zero bits8within that length
Bit parityeven12 set bits, so even; not the same as the number itself being even
Highest set bitbit 19worth 524,288
Lowest set bitbit 22 trailing zeros
Power of twoNo
Bytes30c 36 fc
Gray code10100010110110000010n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
32-bit00000000000011000011011011111100
64-bit0000000000000000000000000000000000000000000011000011011011111100
One's complement11111111111100111100100100000011at 32 bits, every bit flipped
Bits reversed00111111011011000011000000000000at 32 bits
Rotated left by 100000000000110000110110111111000at 32 bits, wrapping
Shifted left by 1110000110110111111000= 1,601,016, no wrap
Shifted right by 11100001101101111110= 400,254, discarding the low bit
These bits as a double3.95503502 × 10^-318≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Nearest landmarks
Powers & multiples
800,508 to the power 2640,813,058,064
800,508 to the power 3512,975,979,484,696,512
800,508 to the power 4410,641,375,385,335,435,428,096
800,508 to the power 5328,721,706,126,964,098,743,674,272,768
First ten multiples800,508, 1,601,016, 2,401,524, 3,202,032, 4,002,540, 4,803,048, 5,603,556, 6,404,064, 7,204,572, 8,005,080
Powers of twoBetween 2^19 (524,288) and 2^20 (1,048,576)
Divisibility tests
Divisible by 2Yes
Divisible by 3Yes
Divisible by 4Yes
Divisible by 5No, remainder 3
Divisible by 6Yes
Divisible by 7No, remainder 2
Divisible by 8No, remainder 4
Divisible by 9No, remainder 3
Divisible by 10No, remainder 8
Divisible by 11No, remainder 5
Divisible by 12Yes
Divisible by 100No, remainder 8
Collatz (3n + 1) trajectory
Steps to reach 1237the total stopping time
Highest value reached11,540,39214× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps800,508 → 400,254 → 200,127 → 600,382 → 300,191 → 900,574 → 450,287 → 1,350,862 → 675,431 → 2,026,294 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage80,050,800%
800,508% as a decimal8,005.08
800,508% of 100800,508
800,508% of 1,0008,005,080
As a fraction of 100800,508/100
Read another way
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Derived from 800,508
Also reads as
#800508 (colour)
- #800508
- Red
- Dark
- Nearest: Maroon
#800508 is a red with RGB values 128, 5, 8 and HSL 359°, 92%, 26%. It is a dark colour, so white text on it reaches 10.8:1 contrast (AAA for normal text). The nearest named colour is Maroon.
Colour values
#800508#800508
HEX#800508
RGBrgb(128, 5, 8)
RGB (0–1)0.502, 0.0196, 0.0314
RGB percentages50.2%, 2%, 3.1%
HSLhsl(358.5, 92.5%, 26.1%)
HSV / HSBhsv(358.5, 96.1%, 50.2%)
CMYK0%, 96.1%, 93.8%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,389,896
CSS custom property--colour: #800508;
Brightness & contrast
Relative luminance0.04715WCAG 2.x, 0 is black and 1 is white
Perceived brightness70.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 10.81:1
Contrast with white10.81:1WCAG normal text: AAA
Contrast with black1.94:1WCAG normal text: Fail
Greyscale equivalent#1F1F1F
Inverted#7FFAF7
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text10.81:1WCAG large text: AAA
Contrast with black, large text1.94:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#05807D
Analogous#800546, #804005
Triadic#088005, #050880
Split complementary#058040, #054680
Tetradic#458005, #05807D, #3F0580
Tints, shades & saturation
Channel breakdown
R128
G5
B8
Red128 (50.2%)
Green5 (2%)
Blue8 (3.1%)
Hue358.54°
Saturation (HSL)92.48%
Lightness26.08%
Dominant channelRed
Hex per channelR 80 · G 05 · B 08
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