Number
406
406 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 10
- Digital root
- 1
- Palindrome
- No
- Divisor count
- 8
- σ(n) — sum of divisors
- 720
Primality
Prime factorization: 2 × 7 × 29
Divisors & multiples
Aliquot sum (sum of proper divisors):
314
Representations
- In words
- four hundred six
- Ordinal
- 406th
- Roman numeral
- CDVI
- Binary
- 110010110
- Octal
- 626
- Hexadecimal
- 196
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 406, here are decompositions:
- 5 + 401 = 406
- 17 + 389 = 406
- 23 + 383 = 406
- 47 + 359 = 406
- 53 + 353 = 406
- 59 + 347 = 406
- 89 + 317 = 406
- 113 + 293 = 406
Showing the first eight; more decompositions exist.
Unicode codepoint
Ɩ
U+0196
Uppercase letter (Lu)
UTF-8 encoding: C6 96 (2 bytes).
Hex color
#000196
RGB(0, 1, 150)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.150.