Recognised as Number
382
- Positive
- Even
- Composite
- 3 digits
382 is an even 3-digit integer and a composite number. It has 4 divisors and a digital root of 4.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value382
Digit count3
Digit sum13
Digit product48
Multiplicative persistence3times the digit product can be taken before one digit is left
Digital root4repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2 × 191
Distinct prime factors22, 191
Number of divisors4
Sum of divisors σ(n)576
Aliquot sum194sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)190integers below n that share no factor with it
Carmichael function λ(n)190the smallest exponent with aˣ ≡ 1 for every unit coprime to n
Möbius function μ(n)+12 distinct prime factors, an even number of them
SquarefreeYesno repeated prime factor
All divisors1, 2, 191, 3824 in total
Arithmetic
Representations
Decimal382
Binary1011111109 bits
Octal576
Hexadecimal17E
Base 36AM
Roman numeralCCCLXXXII
In wordsthree hundred and eighty-two
Ordinalthree hundred and eighty-second
Scientific notation3.82 × 10^2
Engineering notation382
In other bases
Ternary112011base 3; the most digit-efficient integer base after e: 6 digits
Quinary3012base 5; one hand: 4 digits
Septenary1054base 7: 4 digits
Nonary464base 9; each digit is two ternary digits: 3 digits
Duodecimal27abase 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 3 digits
Vigesimalj2base 20; hands and feet, and the Mayan and Yoruba systems: 2 digits
Sexagesimal6:22base 60; Babylonian, and still how an hour and a circle are divided: 2 digits
Balanced ternary1TTT011digits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary11010000010base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
0000000101111110
Bit length9 bitsto write the magnitude
Set bits7the population count, or Hamming weight
Zero bits2within that length
Bit parityodd7 set bits, so odd; not the same as the number itself being even
Highest set bitbit 8worth 256
Lowest set bitbit 11 trailing zero
Power of twoNo
Bytes201 7e
Gray code111000001n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
16-bit0000000101111110
32-bit00000000000000000000000101111110
64-bit0000000000000000000000000000000000000000000000000000000101111110
One's complement1111111010000001at 16 bits, every bit flipped
Bits reversed0111111010000000at 16 bits
Rotated left by 10000001011111100at 16 bits, wrapping
Shifted left by 11011111100= 764, no wrap
Shifted right by 110111111= 191, discarding the low bit
These bits as a double1.88733077 × 10^-321≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Nearest landmarks
Powers & multiples
382 to the power 2145,924
382 to the power 355,742,968
382 to the power 421,293,813,776
382 to the power 58,134,236,862,432
First ten multiples382, 764, 1,146, 1,528, 1,910, 2,292, 2,674, 3,056, 3,438, 3,820
Powers of twoBetween 2^8 (256) and 2^9 (512)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 1
Divisible by 4No, remainder 2
Divisible by 5No, remainder 2
Divisible by 6No, remainder 4
Divisible by 7No, remainder 4
Divisible by 8No, remainder 6
Divisible by 9No, remainder 4
Divisible by 10No, remainder 2
Divisible by 11No, remainder 8
Divisible by 12No, remainder 10
Divisible by 100No, remainder 82
Collatz (3n + 1) trajectory
Steps to reach 145the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps382 → 191 → 574 → 287 → 862 → 431 → 1,294 → 647 → 1,942 → 971 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage38,200%
382% as a decimal3.82
382% of 100382
382% of 1,0003,820
As a fraction of 100382/100
Read another way
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Derived from 382
Other readings
Also reads as
#338822 (colour)
- #338822
- Green
- Dark
- Nearest: Forest green
#338822 is a green with RGB values 51, 136, 34 and HSL 110°, 60%, 33%. It is a dark colour, so black text on it reaches 4.7:1 contrast (AA for normal text). The nearest named colour is Forest green.
Colour values
#338822#338822
HEX#338822
HEX (short)#382
RGBrgb(51, 136, 34)
RGB (0–1)0.2, 0.5333, 0.1333
RGB percentages20%, 53.3%, 13.3%
HSLhsl(110, 60%, 33.3%)
HSV / HSBhsv(110, 75%, 53.3%)
CMYK62.5%, 0%, 75%, 46.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,377,186
CSS custom property--colour: #338822;
Brightness & contrast
Relative luminance0.18428WCAG 2.x, 0 is black and 1 is white
Perceived brightness108.5 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundBlackcontrast 4.69:1
Contrast with white4.48:1WCAG normal text: Fail
Contrast with black4.69:1WCAG normal text: AA
Greyscale equivalent#6F6F6F
Inverted#CC77DD
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.48:1WCAG large text: AA
Contrast with black, large text4.69:1WCAG large text: AAA
Named colours
Hue familygreen
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#772288
Analogous#668822, #228844
Triadic#223388, #882233
Split complementary#442288, #882266
Tetradic#226688, #772288, #884422
Tints, shades & saturation
Channel breakdown
R51
G136
B34
Red51 (20%)
Green136 (53.3%)
Blue34 (13.3%)
Hue110°
Saturation (HSL)60%
Lightness33.33%
Dominant channelGreen
Hex per channelR 33 · G 88 · B 22
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Harmonies
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