Number
370
- Positive
- Even
- Composite
- 3 digits
370 is an even 3-digit integer and a composite number. It has 8 divisors and a digital root of 1.
The canonical address for this page is /370.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value370
Digit count3
Digit sum10
Digital root1repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberYesdivisible by its own digit sum
Armstrong numberYesdigits raised to the digit count sum to itself
Factors & divisors
Prime factorisation2 × 5 × 37
Distinct prime factors32, 5, 37
Number of divisors8
Sum of divisors σ(n)684
Aliquot sum314sum of the proper divisors
ClassificationDeficientthe aliquot sum is less than the number
Euler's totient φ(n)144integers below n that share no factor with it
SquarefreeYesno repeated prime factor
All divisors1, 2, 5, 10, 37, 74, 185, 3708 in total
Arithmetic
Representations
Decimal370
Binary1011100109 bits
Octal562
Hexadecimal172
Base 36AA
Roman numeralCCCLXX
In wordsthree hundred and seventy
Ordinalthree hundred and seventieth
Scientific notation3.7 × 10^2
Engineering notation370
Nearest landmarks
Powers & multiples
370 to the power 2136,900
370 to the power 350,653,000
370 to the power 418,741,610,000
370 to the power 56,934,395,700,000
First ten multiples370, 740, 1,110, 1,480, 1,850, 2,220, 2,590, 2,960, 3,330, 3,700
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 5Yes
Divisible by 6No, remainder 4
Divisible by 7No, remainder 6
Divisible by 8No, remainder 2
Divisible by 9No, remainder 1
Divisible by 10Yes
Divisible by 11No, remainder 7
Divisible by 12No, remainder 10
Divisible by 100No, remainder 70
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 steps370 → 185 → 556 → 278 → 139 → 418 → 209 → 628 → 314 → 157 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage37,000%
370% as a decimal3.7
370% of 100370
370% of 1,0003,700
As a fraction of 100370/100
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Derived from 370
Other readings
Also reads as
#000370 (colour)
- #000370
- Blue
- Dark
- Nearest: Navy
#000370 is a blue with RGB values 0, 3, 112 and HSL 238°, 100%, 22%. It is a dark colour, so white text on it reaches 16.8:1 contrast (AAA for normal text). The nearest named colour is Navy.
Colour values
#000370#000370
HEX#000370
RGBrgb(0, 3, 112)
RGB (0–1)0, 0.0118, 0.4392
RGB percentages0%, 1.2%, 43.9%
HSLhsl(238.4, 100%, 22%)
HSV / HSBhsv(238.4, 100%, 43.9%)
CMYK100%, 97.3%, 0%, 56.1%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer880
CSS custom property--colour: #000370;
Brightness & contrast
Relative luminance0.01235WCAG 2.x, 0 is black and 1 is white
Perceived brightness37.9 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 16.84:1
Contrast with white16.84:1WCAG normal text: AAA
Contrast with black1.25:1WCAG normal text: Fail
Greyscale equivalent#0A0A0A
Inverted#FFFC8F
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text16.84:1WCAG large text: AAA
Contrast with black, large text1.25:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#706D00
Analogous#003B70, #350070
Triadic#700003, #037000
Split complementary#703500, #3B7000
Tetradic#70003B, #706D00, #007035
Tints, shades & saturation
Channel breakdown
R0
G3
B112
Red0 (0%)
Green3 (1.2%)
Blue112 (43.9%)
Hue238.39°
Saturation (HSL)100%
Lightness21.96%
Dominant channelBlue
Hex per channelR 00 · G 03 · B 70
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