Number
800,180
- Positive
- Even
- Composite
- 6 digits
800,180 is an even 6-digit integer and a composite number. It has 12 divisors and a digital root of 8.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value800,180
Digit count6
Digit sum17
Digital root8repeated digit sum
PalindromicNoreads differently backwards
Happy numberYessquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2^2 × 5 × 40,009
Distinct prime factors32, 5, 40,009
Number of divisors12
Sum of divisors σ(n)1,680,420
Aliquot sum880,240sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)320,064integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 2, 4, 5, 10, 20, 40,009, 80,018, 160,036, 200,045, 400,090, 800,18012 in total
Arithmetic
Representations
Decimal800,180
Binary1100001101011011010020 bits
Octal3032664
HexadecimalC35B4
Base 36H5F8
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordseight hundred thousand, one hundred and eighty
Ordinaleight hundred thousand, one hundred and eightieth
Scientific notation8.0018 × 10^5
Engineering notation800.18 × 10^3
Nearest landmarks
Powers & multiples
800,180 to the power 2640,288,032,400
800,180 to the power 3512,345,677,765,832,000
800,180 to the power 4409,968,764,434,663,449,760,000
800,180 to the power 5328,048,805,925,328,999,228,956,800,000
First ten multiples800,180, 1,600,360, 2,400,540, 3,200,720, 4,000,900, 4,801,080, 5,601,260, 6,401,440, 7,201,620, 8,001,800
Powers of twoBetween 2^19 (524,288) and 2^20 (1,048,576)
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 8No, remainder 4
Divisible by 9No, remainder 8
Divisible by 10Yes
Divisible by 11No, remainder 7
Divisible by 12No, remainder 8
Divisible by 100No, remainder 80
Collatz (3n + 1) trajectory
Steps to reach 1193the total stopping time
Highest value reached3,079,7803× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps800,180 → 400,090 → 200,045 → 600,136 → 300,068 → 150,034 → 75,017 → 225,052 → 112,526 → 56,263 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage80,018,000%
800,180% as a decimal8,001.8
800,180% of 100800,180
800,180% of 1,0008,001,800
As a fraction of 100800,180/100
Read another way
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Derived from 800,180
Also reads as
#800180 (colour)
- #800180
- Magenta
- Dark
- Nearest: Purple
#800180 is a magenta with RGB values 128, 1, 128 and HSL 300°, 98%, 25%. It is a dark colour, so white text on it reaches 9.4:1 contrast (AAA for normal text). The nearest named colour is Purple.
Colour values
#800180#800180
HEX#800180
RGBrgb(128, 1, 128)
RGB (0–1)0.502, 0.0039, 0.502
RGB percentages50.2%, 0.4%, 50.2%
HSLhsl(300, 98.4%, 25.3%)
HSV / HSBhsv(300, 99.2%, 50.2%)
CMYK0%, 99.2%, 0%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,388,992
CSS custom property--colour: #800180;
Brightness & contrast
Relative luminance0.06169WCAG 2.x, 0 is black and 1 is white
Perceived brightness82.3 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.4:1
Contrast with white9.4:1WCAG normal text: AAA
Contrast with black2.23:1WCAG normal text: Fail
Greyscale equivalent#252525
Inverted#7FFE7F
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text9.4:1WCAG large text: AAA
Contrast with black, large text2.23:1WCAG large text: Fail
Named colours
Hue familymagenta
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#018001
Analogous#410180, #800141
Triadic#808001, #018080
Split complementary#418001, #018041
Tetradic#804101, #018001, #014180
Tints, shades & saturation
Channel breakdown
R128
G1
B128
Red128 (50.2%)
Green1 (0.4%)
Blue128 (50.2%)
Hue300°
Saturation (HSL)98.45%
Lightness25.29%
Dominant channelRed and Blue
Hex per channelR 80 · G 01 · B 80
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Harmonies
Similar named colours
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