Number
980
- Positive
- Even
- Composite
- 3 digits
980 is an even 3-digit integer and a composite number. It has 18 divisors and a digital root of 8.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value980
Digit count3
Digit sum17
Digital root8repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2^2 × 5 × 7^2
Distinct prime factors32, 5, 7
Number of divisors18
Sum of divisors σ(n)2,394
Aliquot sum1,414sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)336integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 98018 in total
Arithmetic
Representations
Decimal980
Binary111101010010 bits
Octal1724
Hexadecimal3D4
Base 36R8
Roman numeralCMLXXX
In wordsnine hundred and eighty
Ordinalnine hundred and eightieth
Scientific notation9.8 × 10^2
Engineering notation980
Nearest landmarks
Powers & multiples
980 to the power 2960,400
980 to the power 3941,192,000
980 to the power 4922,368,160,000
980 to the power 5903,920,796,800,000
First ten multiples980, 1,960, 2,940, 3,920, 4,900, 5,880, 6,860, 7,840, 8,820, 9,800
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 7Yes
Divisible by 8No, remainder 4
Divisible by 9No, remainder 8
Divisible by 10Yes
Divisible by 11No, remainder 1
Divisible by 12No, remainder 8
Divisible by 100No, remainder 80
Collatz (3n + 1) trajectory
Steps to reach 123the total stopping time
Highest value reached980
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps980 → 490 → 245 → 736 → 368 → 184 → 92 → 46 → 23 → 70 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage98,000%
980% as a decimal9.8
980% of 100980
980% of 1,0009,800
As a fraction of 100980/100
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Derived from 980
Other readings
Also reads as
#998800 (colour)
- #998800
- Yellow
- Dark
- Nearest: Olive
#998800 is a yellow with RGB values 153, 136, 0 and HSL 53°, 100%, 30%. It is a dark colour, so black text on it reaches 5.9:1 contrast (AA for normal text). The nearest named colour is Olive.
Colour values
#998800#998800
HEX#998800
HEX (short)#980
RGBrgb(153, 136, 0)
RGB (0–1)0.6, 0.5333, 0
RGB percentages60%, 53.3%, 0%
HSLhsl(53.3, 100%, 30%)
HSV / HSBhsv(53.3, 100%, 60%)
CMYK0%, 11.1%, 100%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer10,061,824
CSS custom property--colour: #998800;
Brightness & contrast
Relative luminance0.24381WCAG 2.x, 0 is black and 1 is white
Perceived brightness133.6 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 5.88:1
Contrast with white3.57:1WCAG normal text: Fail
Contrast with black5.88:1WCAG normal text: AA
Greyscale equivalent#828282
Inverted#6677FF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.57:1WCAG large text: AA
Contrast with black, large text5.88:1WCAG large text: AAA
Named colours
Hue familyyellow
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#001199
Analogous#993B00, #5D9900
Triadic#009988, #880099
Split complementary#005D99, #3B0099
Tetradic#00993C, #001199, #99005E
Tints, shades & saturation
Channel breakdown
R153
G136
B0
Red153 (60%)
Green136 (53.3%)
Blue0 (0%)
Hue53.33°
Saturation (HSL)100%
Lightness30%
Dominant channelRed
Hex per channelR 99 · G 88 · B 00
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