Number
320
- Positive
- Even
- Composite
- 3 digits
320 is an even 3-digit integer and a composite number. It has 14 divisors and a digital root of 5.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value320
Digit count3
Digit sum5
Digital root5repeated digit sum
PalindromicNoreads differently backwards
Happy numberYessquared-digit sums reach 1
Harshad numberYesdivisible by its own digit sum
Factors & divisors
Prime factorisation2^6 × 5
Distinct prime factors22, 5
Number of divisors14
Sum of divisors σ(n)762
Aliquot sum442sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)128integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 32014 in total
Arithmetic
Representations
Decimal320
Binary1010000009 bits
Octal500
Hexadecimal140
Base 368W
Roman numeralCCCXX
In wordsthree hundred and twenty
Ordinalthree hundred and twentieth
Scientific notation3.2 × 10^2
Engineering notation320
Nearest landmarks
Powers & multiples
320 to the power 2102,400
320 to the power 332,768,000
320 to the power 410,485,760,000
320 to the power 53,355,443,200,000
First ten multiples320, 640, 960, 1,280, 1,600, 1,920, 2,240, 2,560, 2,880, 3,200
Powers of twoBetween 2^8 (256) and 2^9 (512)
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 5
Divisible by 8Yes
Divisible by 9No, remainder 5
Divisible by 10Yes
Divisible by 11No, remainder 1
Divisible by 12No, remainder 8
Divisible by 100No, remainder 20
Collatz (3n + 1) trajectory
Steps to reach 111the total stopping time
Highest value reached320
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps320 → 160 → 80 → 40 → 20 → 10 → 5 → 16 → 8 → 4 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage32,000%
320% as a decimal3.2
320% of 100320
320% of 1,0003,200
As a fraction of 100320/100
Read another way
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Derived from 320
Other readings
Also reads as
#332200 (colour)
- #332200
- Orange
- Dark
- Nearest: Black
#332200 is a orange with RGB values 51, 34, 0 and HSL 40°, 100%, 10%. It is a dark colour, so white text on it reaches 15.3:1 contrast (AAA for normal text). The nearest named colour is Black.
Colour values
#332200#332200
HEX#332200
HEX (short)#320
RGBrgb(51, 34, 0)
RGB (0–1)0.2, 0.1333, 0
RGB percentages20%, 13.3%, 0%
HSLhsl(40, 100%, 10%)
HSV / HSBhsv(40, 100%, 20%)
CMYK0%, 33.3%, 100%, 80%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,351,040
CSS custom property--colour: #332200;
Brightness & contrast
Relative luminance0.01848WCAG 2.x, 0 is black and 1 is white
Perceived brightness38.2 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 15.33:1
Contrast with white15.33:1WCAG normal text: AAA
Contrast with black1.37:1WCAG normal text: Fail
Greyscale equivalent#232323
Inverted#CCDDFF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text15.33:1WCAG large text: AAA
Contrast with black, large text1.37:1WCAG large text: Fail
Named colours
Hue familyorange
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#001133
Analogous#330900, #2A3300
Triadic#003322, #220033
Split complementary#002B33, #090033
Tetradic#003308, #001133, #33002A
Tints, shades & saturation
Channel breakdown
R51
G34
B0
Red51 (20%)
Green34 (13.3%)
Blue0 (0%)
Hue40°
Saturation (HSL)100%
Lightness10%
Dominant channelRed
Hex per channelR 33 · G 22 · B 00
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Harmonies
Similar named colours
Nerdulate something else
Nothing in mind? Surprise me · today’s page