Number
798
- Positive
- Even
- Composite
- 3 digits
798 is an even 3-digit integer and a composite number. It has 16 divisors and a digital root of 6.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value798
Digit count3
Digit sum24
Digital root6repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2 × 3 × 7 × 19
Distinct prime factors42, 3, 7, 19
Number of divisors16
Sum of divisors σ(n)1,920
Aliquot sum1,122sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)216integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 2, 3, 6, 7, 14, 19, 21, 38, 42, 57, 114, 133, 266, 399, 79816 in total
Arithmetic
Representations
Decimal798
Binary110001111010 bits
Octal1436
Hexadecimal31E
Base 36M6
Roman numeralDCCXCVIII
In wordsseven hundred and ninety-eight
Ordinalseven hundred and ninety-eighth
Scientific notation7.98 × 10^2
Engineering notation798
Nearest landmarks
Powers & multiples
798 to the power 2636,804
798 to the power 3508,169,592
798 to the power 4405,519,334,416
798 to the power 5323,604,428,863,968
First ten multiples798, 1,596, 2,394, 3,192, 3,990, 4,788, 5,586, 6,384, 7,182, 7,980
Powers of twoBetween 2^9 (512) and 2^10 (1,024)
Divisibility tests
Divisible by 2Yes
Divisible by 3Yes
Divisible by 4No, remainder 2
Divisible by 5No, remainder 3
Divisible by 6Yes
Divisible by 7Yes
Divisible by 8No, remainder 6
Divisible by 9No, remainder 6
Divisible by 10No, remainder 8
Divisible by 11No, remainder 6
Divisible by 12No, remainder 6
Divisible by 100No, remainder 98
Collatz (3n + 1) trajectory
Steps to reach 1121the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps798 → 399 → 1,198 → 599 → 1,798 → 899 → 2,698 → 1,349 → 4,048 → 2,024 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage79,800%
798% as a decimal7.98
798% of 100798
798% of 1,0007,980
As a fraction of 100798/100
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Derived from 798
Other readings
Also reads as
#779988 (colour)
- #779988
- Cyan
- Dark
- Nearest: Cadetblue
#779988 is a cyan with RGB values 119, 153, 136 and HSL 150°, 14%, 53%. It is a dark colour, so black text on it reaches 6.7:1 contrast (AA for normal text). The nearest named colour is Cadetblue.
Colour values
#779988#779988
HEX#779988
HEX (short)#798
RGBrgb(119, 153, 136)
RGB (0–1)0.4667, 0.6, 0.5333
RGB percentages46.7%, 60%, 53.3%
HSLhsl(150, 14.3%, 53.3%)
HSV / HSBhsv(150, 22.2%, 60%)
CMYK22.2%, 0%, 11.1%, 40%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer7,838,088
CSS custom property--colour: #779988;
Brightness & contrast
Relative luminance0.28482WCAG 2.x, 0 is black and 1 is white
Perceived brightness141.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 6.7:1
Contrast with white3.14:1WCAG normal text: Fail
Contrast with black6.7:1WCAG normal text: AA
Greyscale equivalent#919191
Inverted#886677
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text3.14:1WCAG large text: AA
Contrast with black, large text6.7:1WCAG large text: AAA
Named colours
Hue familycyan
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#997788
Analogous#779977, #779999
Triadic#887799, #998877
Split complementary#997799, #997777
Tetradic#777799, #997788, #999977
Tints, shades & saturation
Channel breakdown
R119
G153
B136
Red119 (46.7%)
Green153 (60%)
Blue136 (53.3%)
Hue150°
Saturation (HSL)14.29%
Lightness53.33%
Dominant channelGreen
Hex per channelR 77 · G 99 · B 88
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