Number
712
- Positive
- Even
- Composite
- 3 digits
712 is an even 3-digit integer and a composite number. It has 8 divisors and a digital root of 1.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value712
Digit count3
Digit sum10
Digital root1repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2^3 × 89
Distinct prime factors22, 89
Number of divisors8
Sum of divisors σ(n)1,350
Aliquot sum638sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)352integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 2, 4, 8, 89, 178, 356, 7128 in total
Arithmetic
Representations
Decimal712
Binary101100100010 bits
Octal1310
Hexadecimal2C8
Base 36JS
Roman numeralDCCXII
In wordsseven hundred and twelve
Ordinalseven hundred and twelfth
Scientific notation7.12 × 10^2
Engineering notation712
Nearest landmarks
Powers & multiples
712 to the power 2506,944
712 to the power 3360,944,128
712 to the power 4256,992,219,136
712 to the power 5182,978,460,024,832
First ten multiples712, 1,424, 2,136, 2,848, 3,560, 4,272, 4,984, 5,696, 6,408, 7,120
Powers of twoBetween 2^9 (512) and 2^10 (1,024)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 1
Divisible by 4Yes
Divisible by 5No, remainder 2
Divisible by 6No, remainder 4
Divisible by 7No, remainder 5
Divisible by 8Yes
Divisible by 9No, remainder 1
Divisible by 10No, remainder 2
Divisible by 11No, remainder 8
Divisible by 12No, remainder 4
Divisible by 100No, remainder 12
Collatz (3n + 1) trajectory
Steps to reach 133the total stopping time
Highest value reached712
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps712 → 356 → 178 → 89 → 268 → 134 → 67 → 202 → 101 → 304 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage71,200%
712% as a decimal7.12
712% of 100712
712% of 1,0007,120
As a fraction of 100712/100
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Derived from 712
Other readings
Also reads as
#771122 (colour)
- #771122
- Red
- Dark
- Nearest: Brown
#771122 is a red with RGB values 119, 17, 34 and HSL 350°, 75%, 27%. It is a dark colour, so white text on it reaches 11.1:1 contrast (AAA for normal text). The nearest named colour is Brown.
Colour values
#771122#771122
HEX#771122
HEX (short)#712
RGBrgb(119, 17, 34)
RGB (0–1)0.4667, 0.0667, 0.1333
RGB percentages46.7%, 6.7%, 13.3%
HSLhsl(350, 75%, 26.7%)
HSV / HSBhsv(350, 85.7%, 46.7%)
CMYK0%, 85.7%, 71.4%, 53.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer7,803,170
CSS custom property--colour: #771122;
Brightness & contrast
Relative luminance0.04438WCAG 2.x, 0 is black and 1 is white
Perceived brightness67.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 11.12:1
Contrast with white11.12:1WCAG normal text: AAA
Contrast with black1.89:1WCAG normal text: Fail
Greyscale equivalent#282828
Inverted#88EEDD
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text11.12:1WCAG large text: AAA
Contrast with black, large text1.89:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#117766
Analogous#771155, #773311
Triadic#227711, #112277
Split complementary#117733, #115577
Tetradic#557711, #117766, #331177
Tints, shades & saturation
Channel breakdown
R119
G17
B34
Red119 (46.7%)
Green17 (6.7%)
Blue34 (13.3%)
Hue350°
Saturation (HSL)75%
Lightness26.67%
Dominant channelRed
Hex per channelR 77 · G 11 · B 22
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