Number
388
388 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 19
- Digital root
- 1
- Palindrome
- No
- Divisor count
- 6
- σ(n) — sum of divisors
- 686
Primality
Prime factorization: 2 2 × 97
Divisors & multiples
Aliquot sum (sum of proper divisors):
298
Representations
- In words
- three hundred eighty-eight
- Ordinal
- 388th
- Roman numeral
- CCCLXXXVIII
- Binary
- 110000100
- Octal
- 604
- Hexadecimal
- 184
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 388, here are decompositions:
- 5 + 383 = 388
- 29 + 359 = 388
- 41 + 347 = 388
- 71 + 317 = 388
- 107 + 281 = 388
- 131 + 257 = 388
- 137 + 251 = 388
- 149 + 239 = 388
Showing the first eight; more decompositions exist.
Unicode codepoint
Ƅ
U+0184
Uppercase letter (Lu)
UTF-8 encoding: C6 84 (2 bytes).
Hex color
#000184
RGB(0, 1, 132)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.132.