Number
920
- Positive
- Even
- Composite
- 3 digits
920 is an even 3-digit integer and a composite number. It has 16 divisors and a digital root of 2.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value920
Digit count3
Digit sum11
Digital root2repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2^3 × 5 × 23
Distinct prime factors32, 5, 23
Number of divisors16
Sum of divisors σ(n)2,160
Aliquot sum1,240sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds 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, 5, 8, 10, 20, 23, 40, 46, 92, 115, 184, 230, 460, 92016 in total
Arithmetic
Representations
Decimal920
Binary111001100010 bits
Octal1630
Hexadecimal398
Base 36PK
Roman numeralCMXX
In wordsnine hundred and twenty
Ordinalnine hundred and twentieth
Scientific notation9.2 × 10^2
Engineering notation920
Nearest landmarks
Powers & multiples
920 to the power 2846,400
920 to the power 3778,688,000
920 to the power 4716,392,960,000
920 to the power 5659,081,523,200,000
First ten multiples920, 1,840, 2,760, 3,680, 4,600, 5,520, 6,440, 7,360, 8,280, 9,200
Powers of twoBetween 2^9 (512) and 2^10 (1,024)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 2
Divisible by 4Yes
Divisible by 5Yes
Divisible by 6No, remainder 2
Divisible by 7No, remainder 3
Divisible by 8Yes
Divisible by 9No, remainder 2
Divisible by 10Yes
Divisible by 11No, remainder 7
Divisible by 12No, remainder 8
Divisible by 100No, remainder 20
Collatz (3n + 1) trajectory
Steps to reach 136the total stopping time
Highest value reached920
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps920 → 460 → 230 → 115 → 346 → 173 → 520 → 260 → 130 → 65 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage92,000%
920% as a decimal9.2
920% of 100920
920% of 1,0009,200
As a fraction of 100920/100
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Derived from 920
Other readings
Also reads as
#992200 (colour)
- #992200
- Red
- Dark
- Nearest: Dark red
#992200 is a red with RGB values 153, 34, 0 and HSL 13°, 100%, 30%. It is a dark colour, so white text on it reaches 8.1:1 contrast (AAA for normal text). The nearest named colour is Dark red.
Colour values
#992200#992200
HEX#992200
HEX (short)#920
RGBrgb(153, 34, 0)
RGB (0–1)0.6, 0.1333, 0
RGB percentages60%, 13.3%, 0%
HSLhsl(13.3, 100%, 30%)
HSV / HSBhsv(13.3, 100%, 60%)
CMYK0%, 77.8%, 100%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,035,712
CSS custom property--colour: #992200;
Brightness & contrast
Relative luminance0.07916WCAG 2.x, 0 is black and 1 is white
Perceived brightness87.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 8.13:1
Contrast with white8.13:1WCAG normal text: AAA
Contrast with black2.58:1WCAG normal text: Fail
Greyscale equivalent#393939
Inverted#66DDFF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text8.13:1WCAG large text: AAA
Contrast with black, large text2.58:1WCAG large text: Fail
Named colours
Hue familyred
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#007799
Analogous#99002A, #996E00
Triadic#009922, #220099
Split complementary#00996F, #002A99
Tetradic#2B9900, #007799, #6E0099
Tints, shades & saturation
Channel breakdown
R153
G34
B0
Red153 (60%)
Green34 (13.3%)
Blue0 (0%)
Hue13.33°
Saturation (HSL)100%
Lightness30%
Dominant channelRed
Hex per channelR 99 · G 22 · B 00
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