Number
727
- Positive
- Odd
- Prime
- 3 digits
727 is an odd 3-digit integer and a prime number. It has 2 divisors and a digital root of 7.
Number properties
ParityOddnot divisible by 2
SignPositive
PrimalityPrime
Absolute value727
Digit count3
Digit sum16
Digital root7repeated digit sum
PalindromicYesreads the same backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation727
Distinct prime factors1727
Number of divisors2
Sum of divisors σ(n)728
Aliquot sum1sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)726integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 7272 in total
Arithmetic
Representations
Decimal727
Binary101101011110 bits
Octal1327
Hexadecimal2D7
Base 36K7
Roman numeralDCCXXVII
In wordsseven hundred and twenty-seven
Ordinalseven hundred and twenty-seventh
Scientific notation7.27 × 10^2
Engineering notation727
Nearest landmarks
Powers & multiples
727 to the power 2528,529
727 to the power 3384,240,583
727 to the power 4279,342,903,841
727 to the power 5203,082,291,092,407
First ten multiples727, 1,454, 2,181, 2,908, 3,635, 4,362, 5,089, 5,816, 6,543, 7,270
Powers of twoBetween 2^9 (512) and 2^10 (1,024)
Divisibility tests
Divisible by 2No, remainder 1
Divisible by 3No, remainder 1
Divisible by 4No, remainder 3
Divisible by 5No, remainder 2
Divisible by 6No, remainder 1
Divisible by 7No, remainder 6
Divisible by 8No, remainder 7
Divisible by 9No, remainder 7
Divisible by 10No, remainder 7
Divisible by 11No, remainder 1
Divisible by 12No, remainder 7
Divisible by 100No, remainder 27
Collatz (3n + 1) trajectory
Steps to reach 146the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps727 → 2,182 → 1,091 → 3,274 → 1,637 → 4,912 → 2,456 → 1,228 → 614 → 307 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage72,700%
727% as a decimal7.27
727% of 100727
727% of 1,0007,270
As a fraction of 100727/100
Read another way
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Derived from 727
Other readings
Also reads as
#772277 (colour)
- #772277
- Magenta
- Dark
- Nearest: Purple
#772277 is a magenta with RGB values 119, 34, 119 and HSL 300°, 56%, 30%. It is a dark colour, so white text on it reaches 9.2:1 contrast (AAA for normal text). The nearest named colour is Purple.
Colour values
#772277#772277
HEX#772277
HEX (short)#727
RGBrgb(119, 34, 119)
RGB (0–1)0.4667, 0.1333, 0.4667
RGB percentages46.7%, 13.3%, 46.7%
HSLhsl(300, 55.6%, 30%)
HSV / HSBhsv(300, 71.4%, 46.7%)
CMYK0%, 71.4%, 0%, 53.3%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer7,807,607
CSS custom property--colour: #772277;
Brightness & contrast
Relative luminance0.06398WCAG 2.x, 0 is black and 1 is white
Perceived brightness80.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.21:1
Contrast with white9.21:1WCAG normal text: AAA
Contrast with black2.28:1WCAG normal text: Fail
Greyscale equivalent#3A3A3A
Inverted#88DD88
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.21:1WCAG large text: AAA
Contrast with black, large text2.28:1WCAG large text: Fail
Named colours
Hue familymagenta
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#227722
Analogous#4D2277, #77224D
Triadic#777722, #227777
Split complementary#4D7722, #22774D
Tetradic#774D22, #227722, #224D77
Tints, shades & saturation
Channel breakdown
R119
G34
B119
Red119 (46.7%)
Green34 (13.3%)
Blue119 (46.7%)
Hue300°
Saturation (HSL)55.56%
Lightness30%
Dominant channelRed and Blue
Hex per channelR 77 · G 22 · B 77
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Harmonies
Similar named colours
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