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Number

873

  • Positive
  • Odd
  • Composite
  • 3 digits

873 is an odd 3-digit integer and a composite number. It has 6 divisors and a digital root of 9.

Number properties

ParityOddnot divisible by 2
SignPositive
PrimalityComposite
Absolute value873
Digit count3
Digit sum18
Digital root9repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum

Factors & divisors

Prime factorisation3^2 × 97
Distinct prime factors23, 97
Number of divisors6
Sum of divisors σ(n)1,274
Aliquot sum401sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)576integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 3, 9, 97, 291, 8736 in total

Arithmetic

Previous number872
Next number874
Double1,746
Half436.5
Square762,129
Cube665,338,617
Square root29.546573405≈irrational, shown to 9 decimal places
Cube root9.557362998≈
Negation-873
Reciprocal0.0011454754≈
873 factorial1721831170324174885189173022125132813381… (2,191 digits)

Representations

Decimal873
Binary110110100110 bits
Octal1551
Hexadecimal369
Base 36O9
Roman numeralDCCCLXXIII
In wordseight hundred and seventy-three
Ordinaleight hundred and seventy-third
Scientific notation8.73 × 10^2
Engineering notation873

Nearest landmarks

Next prime877+4
Previous prime863−10
Distance to nearest prime4
Nearest square below841
Nearest square above900

Powers & multiples

873 to the power 2762,129
873 to the power 3665,338,617
873 to the power 4580,840,612,641
873 to the power 5507,073,854,835,593
First ten multiples873, 1,746, 2,619, 3,492, 4,365, 5,238, 6,111, 6,984, 7,857, 8,730
Powers of twoBetween 2^9 (512) and 2^10 (1,024)

Divisibility tests

Divisible by 2No, remainder 1
Divisible by 3Yes
Divisible by 4No, remainder 1
Divisible by 5No, remainder 3
Divisible by 6No, remainder 3
Divisible by 7No, remainder 5
Divisible by 8No, remainder 1
Divisible by 9Yes
Divisible by 10No, remainder 3
Divisible by 11No, remainder 4
Divisible by 12No, remainder 9
Divisible by 100No, remainder 73

Collatz (3n + 1) trajectory

Steps to reach 1147the total stopping time
Highest value reached9,23210× the starting value
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps873 → 2,620 → 1,310 → 655 → 1,966 → 983 → 2,950 → 1,475 → 4,426 → 2,213 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1

As a percentage & fraction

As a percentage87,300%
873% as a decimal8.73
873% of 100873
873% of 1,0008,730
As a fraction of 100873/100

Read another way

As seconds14 minutes and 33 seconds
As bytes873 B
As a 24-bit colour#000369

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Neighbouring numbers

Nearby primes

Also reads as

#887733 (colour)

  • #887733
  • Yellow
  • Dark
  • Nearest: Dark olivegreen

#887733 is a yellow with RGB values 136, 119, 51 and HSL 48°, 45%, 37%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Dark olivegreen.

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Colour values

#887733#887733
HEX#887733
HEX (short)#873
RGBrgb(136, 119, 51)
RGB (0–1)0.5333, 0.4667, 0.2
RGB percentages53.3%, 46.7%, 20%
HSLhsl(48, 45.5%, 36.7%)
HSV / HSBhsv(48, 62.5%, 53.3%)
CMYK0%, 12.5%, 62.5%, 46.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer8,943,411
CSS custom property--colour: #887733;

Brightness & contrast

Relative luminance0.18667WCAG 2.x, 0 is black and 1 is white
Perceived brightness118.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.73:1
Contrast with white4.44:1WCAG normal text: Fail
Contrast with black4.73:1WCAG normal text: AA
Greyscale equivalent#767676
Inverted#7788CC

Colour vision & accessibility

Normal visionProtanopiaDeuteranopiaTritanopia
Protanopia#82752Cno red cones; affects about 1% of men; ΔE 3.1 from the original
Deuteranopia#877A36no green cones; the most common form, about 1% of men; ΔE 2.2 from the original
Tritanopia#926E68no blue cones; rare, and affects men and women equally; ΔE 33.8 from the original
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text4.44:1WCAG large text: AA
Contrast with black, large text4.73:1WCAG large text: AAA

Named colours

Dark olivegreen · ΔE 20.3Olive · ΔE 20.8Dark khaki · ΔE 24Peru · ΔE 27.7Dark goldenrod · ΔE 28.1Olivedrab · ΔE 28.5
Nearest named CSS colourDark olivegreen (#556B2F)ΔE 20.34, a distinctly different colour
Hue familyyellow
CSS keyword usableNo exact keyword

Colour harmonies

base+30°+90°+120°+180°+210°+240°+270°+330°
Complementary#334488
Analogous#884D33, #6F8833
Triadic#338877, #773388
Split complementary#336F88, #4D3388
Tetradic#33884D, #334488, #88336F

Tints, shades & saturation

+40%+30%+20%+10%base-10%-20%-30%-40%
Lighter +40%#DFD4A8
Lighter +30%#D1C183
Lighter +20%#C3AF5E
Lighter +10%#AD9741
Darker −10%#635725
Darker −20%#3E3617
Darker −30%#191609
Darker −40%#000000
More saturated +25%#9F851C
Less saturated −25%#71694A

Channel breakdown

R136
G119
B51
Red136 (53.3%)
Green119 (46.7%)
Blue51 (20%)
Hue48°
Saturation (HSL)45.45%
Lightness36.67%
Dominant channelRed
Hex per channelR 88 · G 77 · B 33

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Every value on this page was computed from “873” by Nerdulator’s number engine. Nothing here was retrieved from a database of answers or written by a model.