Number
790
- Positive
- Even
- Composite
- 3 digits
790 is an even 3-digit integer and a composite number. It has 8 divisors and a digital root of 7.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value790
Digit count3
Digit sum16
Digital root7repeated digit sum
PalindromicNoreads differently backwards
Happy numberYessquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2 × 5 × 79
Distinct prime factors32, 5, 79
Number of divisors8
Sum of divisors σ(n)1,440
Aliquot sum650sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)312integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 2, 5, 10, 79, 158, 395, 7908 in total
Arithmetic
Representations
Decimal790
Binary110001011010 bits
Octal1426
Hexadecimal316
Base 36LY
Roman numeralDCCXC
In wordsseven hundred and ninety
Ordinalseven hundred and ninetieth
Scientific notation7.9 × 10^2
Engineering notation790
Nearest landmarks
Powers & multiples
790 to the power 2624,100
790 to the power 3493,039,000
790 to the power 4389,500,810,000
790 to the power 5307,705,639,900,000
First ten multiples790, 1,580, 2,370, 3,160, 3,950, 4,740, 5,530, 6,320, 7,110, 7,900
Powers of twoBetween 2^9 (512) and 2^10 (1,024)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 1
Divisible by 4No, remainder 2
Divisible by 5Yes
Divisible by 6No, remainder 4
Divisible by 7No, remainder 6
Divisible by 8No, remainder 6
Divisible by 9No, remainder 7
Divisible by 10Yes
Divisible by 11No, remainder 9
Divisible by 12No, remainder 10
Divisible by 100No, remainder 90
Collatz (3n + 1) trajectory
Steps to reach 177the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps790 → 395 → 1,186 → 593 → 1,780 → 890 → 445 → 1,336 → 668 → 334 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage79,000%
790% as a decimal7.9
790% of 100790
790% of 1,0007,900
As a fraction of 100790/100
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Derived from 790
Other readings
Also reads as
#779900 (colour)
- #779900
- Green
- Dark
- Nearest: Olivedrab
#779900 is a green with RGB values 119, 153, 0 and HSL 73°, 100%, 30%. It is a dark colour, so black text on it reaches 6.3:1 contrast (AA for normal text). The nearest named colour is Olivedrab.
Colour values
#779900#779900
HEX#779900
HEX (short)#790
RGBrgb(119, 153, 0)
RGB (0–1)0.4667, 0.6, 0
RGB percentages46.7%, 60%, 0%
HSLhsl(73.3, 100%, 30%)
HSV / HSBhsv(73.3, 100%, 60%)
CMYK22.2%, 0%, 100%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer7,837,952
CSS custom property--colour: #779900;
Brightness & contrast
Relative luminance0.26704WCAG 2.x, 0 is black and 1 is white
Perceived brightness134.1 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.34:1
Contrast with white3.31:1WCAG normal text: Fail
Contrast with black6.34:1WCAG normal text: AA
Greyscale equivalent#878787
Inverted#8866FF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.31:1WCAG large text: AA
Contrast with black, large text6.34:1WCAG large text: AAA
Named colours
Hue familygreen
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#220099
Analogous#996F00, #2A9900
Triadic#007799, #990077
Split complementary#002A99, #6F0099
Tetradic#00996F, #220099, #99002A
Tints, shades & saturation
Channel breakdown
R119
G153
B0
Red119 (46.7%)
Green153 (60%)
Blue0 (0%)
Hue73.33°
Saturation (HSL)100%
Lightness30%
Dominant channelGreen
Hex per channelR 77 · G 99 · B 00
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Harmonies
Similar named colours
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