Recognised as Number
388,000
- Positive
- Even
- Composite
- 6 digits
388,000 is an even 6-digit integer and a composite number. It has 48 divisors and a digital root of 1.
Number properties
ParityEvendivisible by 2
SignPositive
PrimalityComposite
Absolute value388,000
Digit count6
Digit sum19
Digit product0zero, because one of the digits is zero
Multiplicative persistence1times the digit product can be taken before one digit is left
Digital root1repeated digit sum
PalindromicNoreads differently backwards
Happy numberNosquared-digit sums reach 1
Harshad numberNodivisible by its own digit sum
Factors & divisors
Prime factorisation2^5 × 5^3 × 97
Distinct prime factors32, 5, 97
Number of divisors48
Sum of divisors σ(n)963,144
Aliquot sum575,144sum of the proper divisors
ClassificationAbundantthe aliquot sum exceeds the number
Euler's totient φ(n)153,600integers below n that share no factor with it
Carmichael function λ(n)2,400the smallest exponent with aˣ ≡ 1 for every unit; smaller than φ(n) = 153,600
Möbius function μ(n)0zero, because a prime divides n twice
SquarefreeNohas a repeated prime factor
All divisors1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 97, 100, 125, 160, 194, 200, 250, 388, 400, 485, 500, 776, 800, 970, 1,000, 1,552, 1,940, 2,000, 2,425, 3,104, 3,880, 4,000, 4,850, 7,760, 9,700, 12,125, 15,520, 19,400, 24,250, 38,800, 48,500, 77,600, 97,000, 194,000, 388,00048 in total
Arithmetic
Representations
Decimal388,000
Binary101111010111010000019 bits
Octal1365640
Hexadecimal5EBA0
Base 368BDS
Roman numeralNot defined above 3,999there is no agreed standard notation
In wordsthree hundred and eighty-eight thousand
Ordinalthree hundred and eighty-eight thousandth
Scientific notation3.88 × 10^5
Engineering notation388 × 10^3
In other bases
Ternary201201020101base 3; the most digit-efficient integer base after e: 12 digits
Quinary44404000base 5; one hand: 8 digits
Septenary3204124base 7: 7 digits
Nonary651211base 9; each digit is two ternary digits: 6 digits
Duodecimal168654base 12; divides by 2, 3, 4 and 6, which is why eggs and inches come in twelves: 6 digits
Vigesimal28a00base 20; hands and feet, and the Mayan and Yoruba systems: 5 digits
Sexagesimal1:47:46:40base 60; Babylonian, and still how an hour and a circle are divided: 4 digits
Balanced ternary1T1TT011T0101digits −1, 0 and +1 written T, 0 and 1; negation is swapping T and 1, so no sign is needed
Negabinary110100011110011100000base −2; place values alternate 1, −2, 4, −8, so every integer has exactly one form without a sign
Bit-level
00000000000001011110101110100000
Bit length19 bitsto write the magnitude
Set bits10the population count, or Hamming weight
Zero bits9within that length
Bit parityeven10 set bits, so even; not the same as the number itself being even
Highest set bitbit 18worth 262,144
Lowest set bitbit 55 trailing zeros
Power of twoNo
Bytes305 eb a0
Gray code1110001111001110000n XOR (n >> 1); successive values differ in exactly one bit
At each machine width
32-bit00000000000001011110101110100000
64-bit0000000000000000000000000000000000000000000001011110101110100000
One's complement11111111111110100001010001011111at 32 bits, every bit flipped
Bits reversed00000101110101111010000000000000at 32 bits
Rotated left by 100000000000010111101011101000000at 32 bits, wrapping
Shifted left by 110111101011101000000= 776,000, no wrap
Shifted right by 1101111010111010000= 194,000, discarding the low bit
These bits as a double1.91697471 × 10^-318≈IEEE-754 binary64 reinterpretation of the same 64 bits (subnormal)
Nearest landmarks
Powers & multiples
388,000 to the power 2150,544,000,000
388,000 to the power 358,411,072,000,000,000
388,000 to the power 422,663,495,936,000,000,000,000
388,000 to the power 58,793,436,423,168,000,000,000,000,000
First ten multiples388,000, 776,000, 1,164,000, 1,552,000, 1,940,000, 2,328,000, 2,716,000, 3,104,000, 3,492,000, 3,880,000
Powers of twoBetween 2^18 (262,144) and 2^19 (524,288)
Divisibility tests
Divisible by 2Yes
Divisible by 3No, remainder 1
Divisible by 4Yes
Divisible by 5Yes
Divisible by 6No, remainder 4
Divisible by 7No, remainder 4
Divisible by 8Yes
Divisible by 9No, remainder 1
Divisible by 10Yes
Divisible by 11No, remainder 8
Divisible by 12No, remainder 4
Divisible by 100Yes
Collatz (3n + 1) trajectory
Steps to reach 1148the total stopping time
Highest value reached388,000
Reaches 1Yesthe Collatz conjecture says every positive integer does, but it is unproven
First steps388,000 → 194,000 → 97,000 → 48,500 → 24,250 → 12,125 → 36,376 → 18,188 → 9,094 → 4,547 → …
Last steps… → 5 → 16 → 8 → 4 → 2 → 1
As a percentage & fraction
As a percentage38,800,000%
388,000% as a decimal3,880
388,000% of 100388,000
388,000% of 1,0003,880,000
As a fraction of 100388,000/100
Read another way
Keep nerding
Every link below is a page Nerdulator can generate from what it already knows about this value.
Derived from 388,000
Also reads as
#388000 (colour)
- #388000
- Green
- Dark
- Nearest: Green
#388000 is a green with RGB values 56, 128, 0 and HSL 94°, 100%, 25%. It is a dark colour, so white text on it reaches 4.9:1 contrast (AA for normal text). The nearest named colour is Green.
Colour values
#388000#388000
HEX#388000
RGBrgb(56, 128, 0)
RGB (0–1)0.2196, 0.502, 0
RGB percentages22%, 50.2%, 0%
HSLhsl(93.8, 100%, 25.1%)
HSV / HSBhsv(93.8, 100%, 50.2%)
CMYK56.3%, 0%, 100%, 49.8%≈naive device-independent conversion; real print needs an ICC profile
24-bit integer3,702,784
CSS custom property--colour: #388000;
Brightness & contrast
Relative luminance0.16279WCAG 2.x, 0 is black and 1 is white
Perceived brightness102.7 of 255ITU-R BT.601 weighting
Light or darkDark
Best text colour on this backgroundWhitecontrast 4.93:1
Contrast with white4.93:1WCAG normal text: AA
Contrast with black4.26:1WCAG normal text: Fail
Greyscale equivalent#676767
Inverted#C77FFF
Colour vision & accessibility
Distinguishable without hueShifts in lightness toonever rely on hue alone to carry meaning
Contrast with white, large text4.93:1WCAG large text: AAA
Contrast with black, large text4.26:1WCAG large text: AA
Named colours
Hue familygreen
CSS keyword usableNo exact keyword
Colour harmonies
Complementary#480080
Analogous#788000, #008008
Triadic#003880, #800038
Split complementary#080080, #800078
Tetradic#007880, #480080, #800800
Tints, shades & saturation
Channel breakdown
R56
G128
B0
Red56 (22%)
Green128 (50.2%)
Blue0 (0%)
Hue93.75°
Saturation (HSL)100%
Lightness25.1%
Dominant channelGreen
Hex per channelR 38 · G 80 · 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