Number
330
- Positive
- Even
- Composite
- 3 digits
330 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 value330
Digit count3
Digit sum6
Digital root6repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberYesdivisible by its own digit sum
Factors & divisors
Prime factorisation2 × 3 × 5 × 11
Distinct prime factors42, 3, 5, 11
Number of divisors16
Sum of divisors σ(n)864
Aliquot sum534sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)80integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 33016 in total
Arithmetic
Representations
Decimal330
Binary1010010109 bits
Octal512
Hexadecimal14A
Base 3696
Roman numeralCCCXXX
In wordsthree hundred and thirty
Ordinalthree hundred and thirtieth
Scientific notation3.3 × 10^2
Engineering notation330
Nearest landmarks
Powers & multiples
330 to the power 2108,900
330 to the power 335,937,000
330 to the power 411,859,210,000
330 to the power 53,913,539,300,000
First ten multiples330, 660, 990, 1,320, 1,650, 1,980, 2,310, 2,640, 2,970, 3,300
Powers of twoBetween 2^8 (256) and 2^9 (512)
Divisibility tests
Divisible by 2Yes
Divisible by 3Yes
Divisible by 4No, remainder 2
Divisible by 5Yes
Divisible by 6Yes
Divisible by 7No, remainder 1
Divisible by 8No, remainder 2
Divisible by 9No, remainder 6
Divisible by 10Yes
Divisible by 11Yes
Divisible by 12No, remainder 6
Divisible by 100No, remainder 30
Collatz (3n + 1) trajectory
Steps to reach 1112the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps330 → 165 → 496 → 248 → 124 → 62 → 31 → 94 → 47 → 142 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage33,000%
330% as a decimal3.3
330% of 100330
330% of 1,0003,300
As a fraction of 100330/100
Read another way
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Derived from 330
Other readings
Also reads as
#333300 (colour)
- #333300
- Yellow
- Dark
- Nearest: Dark olivegreen
#333300 is a yellow with RGB values 51, 51, 0 and HSL 60°, 100%, 10%. It is a dark colour, so white text on it reaches 13:1 contrast (AAA for normal text). The nearest named colour is Dark olivegreen.
Colour values
#333300#333300
HEX#333300
HEX (short)#330
RGBrgb(51, 51, 0)
RGB (0–1)0.2, 0.2, 0
RGB percentages20%, 20%, 0%
HSLhsl(60, 100%, 10%)
HSV / HSBhsv(60, 100%, 20%)
CMYK0%, 0%, 100%, 80%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,355,392
CSS custom property--colour: #333300;
Brightness & contrast
Relative luminance0.03071WCAG 2.x, 0 is black and 1 is white
Perceived brightness48 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 13.01:1
Contrast with white13.01:1WCAG normal text: AAA
Contrast with black1.61:1WCAG normal text: Fail
Greyscale equivalent#2F2F2F
Inverted#CCCCFF
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text13.01:1WCAG large text: AAA
Contrast with black, large text1.61:1WCAG large text: Fail
Named colours
Hue familyyellow
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#000033
Analogous#331A00, #1A3300
Triadic#003333, #330033
Split complementary#001A33, #1A0033
Tetradic#00331A, #000033, #33001A
Tints, shades & saturation
Channel breakdown
R51
G51
B0
Red51 (20%)
Green51 (20%)
Blue0 (0%)
Hue60°
Saturation (HSL)100%
Lightness10%
Dominant channelRed and Green
Hex per channelR 33 · G 33 · B 00
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Harmonies
Similar named colours
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