The number 408

Representation numerals

Greek numeral

υηʹ

Arabic numeral

٤٠٨

Roman numeral

CDVIII

Maya numeral


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Chinese numeral

四百零八

Hebrew numeral

תח
Numeral systems
Binary: 110011000
Septimal (base 7): 1122
Octal: 630
Hexadecimal: 198
Base 24: H0
Factorization
408 = 2 × 2 × 2 × 3 × 17
408 has 16 divisors: 1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204, 408
Sum of all divisors other than 408: 672
Sums & differences
Difference of 2 squares: 408 = 232 - 112 = 372 - 312 = 532 - 492 = 1032 - 1012
Goldbach conjecture: 408 = 401 + 7 = 397 + 11 = 389 + 19 = 379 + 29 = 367 + 41 = 349 + 59 = 347 + 61 = 337 + 71 = 311 + 97 = 307 + 101 = . . . (only the first 10 pairs are shown)
Characteristics
408 is a octogonal number
Related primes
The 408th prime number is: 2801
Previous prime number: 401 — Next prime number: 409
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