Number
348
- Positive
- Even
- Composite
- 3 digits
348 is an even 3-digit integer and a composite number. It has 12 divisors and a digital root of 6.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value348
Digit count3
Digit sum15
Digital root6repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2^2 × 3 × 29
Distinct prime factors32, 3, 29
Number of divisors12
Sum of divisors σ(n)840
Aliquot sum492sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)112integers below n that share no factor with it
SquarefreeNohas a repeated prime factor
All divisors1, 2, 3, 4, 6, 12, 29, 58, 87, 116, 174, 34812 in total
Arithmetic
Representations
Decimal348
Binary1010111009 bits
Octal534
Hexadecimal15C
Base 369O
Roman numeralCCCXLVIII
In wordsthree hundred and forty-eight
Ordinalthree hundred and forty-eighth
Scientific notation3.48 × 10^2
Engineering notation348
Nearest landmarks
Powers & multiples
348 to the power 2121,104
348 to the power 342,144,192
348 to the power 414,666,178,816
348 to the power 55,103,830,227,968
First ten multiples348, 696, 1,044, 1,392, 1,740, 2,088, 2,436, 2,784, 3,132, 3,480
Powers of twoBetween 2^8 (256) and 2^9 (512)
Divisibility tests
Divisible by 2Yes
Divisible by 3Yes
Divisible by 4Yes
Divisible by 5No, remainder 3
Divisible by 6Yes
Divisible by 7No, remainder 5
Divisible by 8No, remainder 4
Divisible by 9No, remainder 6
Divisible by 10No, remainder 8
Divisible by 11No, remainder 7
Divisible by 12Yes
Divisible by 100No, remainder 48
Collatz (3n + 1) trajectory
Steps to reach 132the total stopping time
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps348 → 174 → 87 → 262 → 131 → 394 → 197 → 592 → 296 → 148 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage34,800%
348% as a decimal3.48
348% of 100348
348% of 1,0003,480
As a fraction of 100348/100
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Derived from 348
Other readings
Also reads as
#334488 (colour)
- #334488
- Blue
- Dark
- Nearest: Dark slateblue
#334488 is a blue with RGB values 51, 68, 136 and HSL 228°, 45%, 37%. It is a dark colour, so white text on it reaches 9:1 contrast (AAA for normal text). The nearest named colour is Dark slateblue.
Colour values
#334488#334488
HEX#334488
HEX (short)#348
RGBrgb(51, 68, 136)
RGB (0–1)0.2, 0.2667, 0.5333
RGB percentages20%, 26.7%, 53.3%
HSLhsl(228, 45.5%, 36.7%)
HSV / HSBhsv(228, 62.5%, 53.3%)
CMYK62.5%, 50%, 0%, 46.7%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,359,880
CSS custom property--colour: #334488;
Brightness & contrast
Relative luminance0.06616WCAG 2.x, 0 is black and 1 is white
Perceived brightness74.8 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 9.04:1
Contrast with white9.04:1WCAG normal text: AAA
Contrast with black2.32:1WCAG normal text: Fail
Greyscale equivalent#454545
Inverted#CCBB77
Colour vision & accessibility
Distinguishable without hueYesnever rely on hue alone to carry meaning
Contrast with white, large text9.04:1WCAG large text: AAA
Contrast with black, large text2.32:1WCAG large text: Fail
Named colours
Hue familyblue
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#887733
Analogous#336F88, #4D3388
Triadic#883344, #448833
Split complementary#884D33, #6F8833
Tetradic#88336F, #887733, #33884D
Tints, shades & saturation
Channel breakdown
R51
G68
B136
Red51 (20%)
Green68 (26.7%)
Blue136 (53.3%)
Hue228°
Saturation (HSL)45.45%
Lightness36.67%
Dominant channelBlue
Hex per channelR 33 · G 44 · B 88
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Harmonies
Similar named colours
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