Number
478
478 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 3
- Digit sum
- 19
- Digital root
- 1
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 720
Primality
Prime factorization: 2 × 239
Divisors & multiples
Aliquot sum (sum of proper divisors):
242
Representations
- In words
- four hundred seventy-eight
- Ordinal
- 478th
- Roman numeral
- CDLXXVIII
- Binary
- 111011110
- Octal
- 736
- Hexadecimal
- 1DE
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 478, here are decompositions:
- 11 + 467 = 478
- 17 + 461 = 478
- 29 + 449 = 478
- 47 + 431 = 478
- 59 + 419 = 478
- 89 + 389 = 478
- 131 + 347 = 478
- 167 + 311 = 478
Showing the first eight; more decompositions exist.
Unicode codepoint
Ǟ
U+01DE
Uppercase letter (Lu)
UTF-8 encoding: C7 9E (2 bytes).
Hex color
#0001DE
RGB(0, 1, 222)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.222.