Number
264
- Positive
- Even
- Composite
- 3 digits
264 is an even 3-digit integer and a composite number. It has 16 divisors and a digital root of 3.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value264
Digit count3
Digit sum12
Digital root3repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberYesdivisible by its own digit sum
Factors & divisors
Prime factorisation2^3 × 3 × 11
Distinct prime factors32, 3, 11
Number of divisors16
Sum of divisors σ(n)720
Aliquot sum456sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)80integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 44, 66, 88, 132, 26416 in total
Arithmetic
Representations
Decimal264
Binary1000010009 bits
Octal410
Hexadecimal108
Base 367C
Roman numeralCCLXIV
In wordstwo hundred and sixty-four
Ordinaltwo hundred and sixty-fourth
Scientific notation2.64 × 10^2
Engineering notation264
Nearest landmarks
Powers & multiples
264 to the power 269,696
264 to the power 318,399,744
264 to the power 44,857,532,416
264 to the power 51,282,388,557,824
First ten multiples264, 528, 792, 1,056, 1,320, 1,584, 1,848, 2,112, 2,376, 2,640
Powers of twoBetween 2^8 (256) and 2^9 (512)
Divisibility tests
Divisible by 2Yes
Divisible by 3Yes
Divisible by 4Yes
Divisible by 5No, remainder 4
Divisible by 6Yes
Divisible by 7No, remainder 5
Divisible by 8Yes
Divisible by 9No, remainder 3
Divisible by 10No, remainder 4
Divisible by 11Yes
Divisible by 12Yes
Divisible by 100No, remainder 64
Collatz (3n + 1) trajectory
Steps to reach 129the total stopping time
Highest value reached264
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps264 → 132 → 66 → 33 → 100 → 50 → 25 → 76 → 38 → 19 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage26,400%
264% as a decimal2.64
264% of 100264
264% of 1,0002,640
As a fraction of 100264/100
Read another way
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Derived from 264
Other readings
Also reads as
#226644 (colour)
- #226644
- Cyan
- Dark
- Nearest: Sea green
#226644 is a cyan with RGB values 34, 102, 68 and HSL 150°, 50%, 27%. It is a dark colour, so white text on it reaches 6.9:1 contrast (AA for normal text). The nearest named colour is Sea green.
Colour values
#226644#226644
HEX#226644
HEX (short)#264
RGBrgb(34, 102, 68)
RGB (0–1)0.1333, 0.4, 0.2667
RGB percentages13.3%, 40%, 26.7%
HSLhsl(150, 50%, 26.7%)
HSV / HSBhsv(150, 66.7%, 40%)
CMYK66.7%, 0%, 33.3%, 60%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer2,254,404
CSS custom property--colour: #226644;
Brightness & contrast
Relative luminance0.1026WCAG 2.x, 0 is black and 1 is white
Perceived brightness83.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 6.88:1
Contrast with white6.88:1WCAG normal text: AA
Contrast with black3.05:1WCAG normal text: Fail
Greyscale equivalent#555555
Inverted#DD99BB
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text6.88:1WCAG large text: AAA
Contrast with black, large text3.05:1WCAG large text: AA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#662244
Analogous#226622, #226666
Triadic#442266, #664422
Split complementary#662266, #662222
Tetradic#222266, #662244, #666622
Tints, shades & saturation
Channel breakdown
R34
G102
B68
Red34 (13.3%)
Green102 (40%)
Blue68 (26.7%)
Hue150°
Saturation (HSL)50%
Lightness26.67%
Dominant channelGreen
Hex per channelR 22 · G 66 · B 44
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Harmonies
Similar named colours
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