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Number

888

Positive
Even
Composite
3 digits

888 is an even 3-digit integer and a composite number. It has 16 divisors and a digital root of 6.

Number properties

ParityEvendivisible by 2

SignPositive

PrimalityComposite

Absolute value888

Digit count3

Digit sum24

Digital root6repeated digit sum

PalindromicYesreads the same backwards

Happy numberYessquared-digit sums reach 1

Harshad numberYesdivisible by its own digit sum

Factors & divisors

Prime factorisation2^3 × 3 × 37

Distinct prime factors32, 3, 37

Number of divisors16

Sum of divisors σ(n)2,280

Aliquot sum1,392sum of the proper divisors

ClassificationAbundantthe aliquot sum exceeds the number

Euler's totient φ(n)288integers below n that share no factor with it

SquarefreeNohas a repeated prime factor

All divisors1, 2, 3, 4, 6, 8, 12, 24, 37, 74, 111, 148, 222, 296, 444, 88816 in total

Arithmetic

Previous number887

Next number889

Double1,776

Half444

Cube700,227,072

Square root29.799328852≈irrational, shown to 9 decimal places

Cube root9.611791067≈

Negation-888

Reciprocal0.0011261261≈

888 factorial2573658112407462582610583126354960481302… (2,235 digits)

Representations

Decimal888

Binary110111100010 bits

Octal1570

Hexadecimal378

Base 36OO

Roman numeralDCCCLXXXVIII

In wordseight hundred and eighty-eight

Ordinaleight hundred and eighty-eighth

Scientific notation8.88 × 10^2

Engineering notation888

Nearest landmarks

Next prime907+19

Previous prime887−1

Distance to nearest prime1

Nearest square below841

Nearest square above900

Powers & multiples

888 to the power 2788,544

888 to the power 3700,227,072

888 to the power 4621,801,639,936

888 to the power 5552,159,856,263,168

First ten multiples888, 1,776, 2,664, 3,552, 4,440, 5,328, 6,216, 7,104, 7,992, 8,880

Powers of twoBetween 2^9 (512) and 2^10 (1,024)

Divisibility tests

Divisible by 2Yes

Divisible by 3Yes

Divisible by 4Yes

Divisible by 5No, remainder 3

Divisible by 6Yes

Divisible by 7No, remainder 6

Divisible by 8Yes

Divisible by 9No, remainder 6

Divisible by 10No, remainder 8

Divisible by 11No, remainder 8

Divisible by 12Yes

Divisible by 100No, remainder 88

Collatz (3n + 1) trajectory

Steps to reach 172the total stopping time

Highest value reached9,23210× the starting value

Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven

First steps888 → 444 → 222 → 111 → 334 → 167 → 502 → 251 → 754 → 377 → …

Last steps… → 5 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage88,800%

888% as a decimal8.88

888% of 100888

888% of 1,0008,880

As a fraction of 100888/100

Read another way

As seconds14 minutes and 48 seconds

As bytes888 B

As a 24-bit colour#000378

Keep nerding

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Neighbouring numbers

Derived from 888

Nearby primes

Other readings

Also reads as

#888888 (colour)

#888888
Grey
Dark
Nearest: Gray

#888888 is a grey with RGB values 136, 136, 136 and HSL 0°, 0%, 53%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Gray.

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Colour values

#888888#888888

HEX#888888

HEX (short)#888

RGBrgb(136, 136, 136)

RGB (0–1)0.5333, 0.5333, 0.5333

RGB percentages53.3%, 53.3%, 53.3%

HSLhsl(0, 0%, 53.3%)

HSV / HSBhsv(0, 0%, 53.3%)

CMYK0%, 0%, 0%, 46.7%≈naive device-independent conversion; real print needs an ICC profile

24-bit integer8,947,848

CSS custom property--colour: #888888;

Brightness & contrast

Relative luminance0.2462WCAG 2.x, 0 is black and 1 is white

Perceived brightness136 of 255ITU-R BT.601 weighting

Light or darkDark

Best text colour on this backgroundBlackcontrast 5.92:1

Contrast with white3.54:1WCAG normal text: Fail

Contrast with black5.92:1WCAG normal text: AA

Greyscale equivalent#888888

Inverted#777777

Colour vision & accessibility

Normal vision Protanopia Deuteranopia Tritanopia

Protanopia#888888no red cones; affects about 1% of men; ΔE 0 from the original

Deuteranopia#888888no green cones; the most common form, about 1% of men; ΔE 0 from the original

Tritanopia#888888no blue cones; rare, and affects men and women equally; ΔE 0 from the original

Distinguishable without hueYesnever rely on hue alone to carry meaning

Contrast with white, large text3.54:1WCAG large text: AA

Contrast with black, large text5.92:1WCAG large text: AAA

Named colours

Gray · ΔE 3.1 Light slate grey · ΔE 11.4 Slate grey · ΔE 11.5 Dim grey · ΔE 12.3 Dark grey · ΔE 12.5 Rosy brown · ΔE 19.5

Nearest named CSS colourGray (#808080)ΔE 3.12, a close match

Hue familygrey

CSS keyword usableNo exact keyword

Colour harmonies

base +30°+90°+120°+180°+210°+240°+270°+330°

Complementary#888888

Analogous#888888, #888888

Triadic#888888, #888888

Split complementary#888888, #888888

Tetradic#888888, #888888, #888888

Tints, shades & saturation

+40%+30%+20%+10%base -10%-20%-30%-40%

Lighter +40%#EEEEEE

Lighter +30%#D5D5D5

Lighter +20%#BBBBBB

Lighter +10%#A2A2A2

Darker −10%#6F6F6F

Darker −20%#555555

Darker −30%#3C3C3C

Darker −40%#222222

More saturated +25%#A66A6A

Less saturated −25%#888888

Channel breakdown

R136

G136

B136

Red136 (53.3%)

Green136 (53.3%)

Blue136 (53.3%)

Hue0°

Saturation (HSL)0%

Lightness53.33%

Dominant channelNone: the channels are equal (a neutral grey)

Hex per channelR 88 · G 88 · B 88

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Harmonies

Lighter and darker

Similar named colours

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