Number
480
- Positive
- Even
- Composite
- 3 digits
480 is an even 3-digit integer and a composite number. It has 24 divisors and a digital root of 3.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value480
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 factorisation2^5 × 3 × 5
Distinct prime factors32, 3, 5
Number of divisors24
Sum of divisors σ(n)1,512
Aliquot sum1,032sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)128integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 48024 in total
Arithmetic
Representations
Decimal480
Binary1111000009 bits
Octal740
Hexadecimal1E0
Base 36DC
Roman numeralCDLXXX
In wordsfour hundred and eighty
Ordinalfour hundred and eightieth
Scientific notation4.8 × 10^2
Engineering notation480
Nearest landmarks
Powers & multiples
480 to the power 2230,400
480 to the power 3110,592,000
480 to the power 453,084,160,000
480 to the power 525,480,396,800,000
First ten multiples480, 960, 1,440, 1,920, 2,400, 2,880, 3,360, 3,840, 4,320, 4,800
Powers of twoBetween 2^8 (256) and 2^9 (512)
Divisibility tests
Divisible by 2Yes
Divisible by 3Yes
Divisible by 4Yes
Divisible by 5Yes
Divisible by 6Yes
Divisible by 7No, remainder 4
Divisible by 8Yes
Divisible by 9No, remainder 3
Divisible by 10Yes
Divisible by 11No, remainder 7
Divisible by 12Yes
Divisible by 100No, remainder 80
Collatz (3n + 1) trajectory
Steps to reach 122the total stopping time
Highest value reached480
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps480 → 240 → 120 → 60 → 30 → 15 → 46 → 23 → 70 → 35 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage48,000%
480% as a decimal4.8
480% of 100480
480% of 1,0004,800
As a fraction of 100480/100
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Derived from 480
Other readings
Also reads as
#448800 (colour)
- #448800
- Green
- Dark
- Nearest: Green
#448800 is a green with RGB values 68, 136, 0 and HSL 90°, 100%, 27%. It is a dark colour, so black text on it reaches 4.8:1 contrast (AA for normal text). The nearest named colour is Green.
Colour values
#448800#448800
HEX#448800
HEX (short)#480
RGBrgb(68, 136, 0)
RGB (0–1)0.2667, 0.5333, 0
RGB percentages26.7%, 53.3%, 0%
HSLhsl(90, 100%, 26.7%)
HSV / HSBhsv(90, 100%, 53.3%)
CMYK50%, 0%, 100%, 46.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer4,491,264
CSS custom property--colour: #448800;
Brightness & contrast
Relative luminance0.18837WCAG 2.x, 0 is black and 1 is white
Perceived brightness110.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.77:1
Contrast with white4.4:1WCAG normal text: Fail
Contrast with black4.77:1WCAG normal text: AA
Greyscale equivalent#707070
Inverted#BB77FF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.4:1WCAG large text: AA
Contrast with black, large text4.77:1WCAG large text: AAA
Named colours
Hue familygreen
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#440088
Analogous#888800, #008800
Triadic#004488, #880044
Split complementary#000088, #880088
Tetradic#008888, #440088, #880000
Tints, shades & saturation
Channel breakdown
R68
G136
B0
Red68 (26.7%)
Green136 (53.3%)
Blue0 (0%)
Hue90°
Saturation (HSL)100%
Lightness26.67%
Dominant channelGreen
Hex per channelR 44 · G 88 · B 00
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Harmonies
Similar named colours
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