Number
1,408
1,408 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 13
- Digital root
- 4
- Palindrome
- No
- Divisor count
- 16
- σ(n) — sum of divisors
- 3,060
Primality
Prime factorization: 2 7 × 11
Divisors & multiples
Aliquot sum (sum of proper divisors):
1,652
First multiples
Representations
- In words
- one thousand four hundred eight
- Ordinal
- 1408th
- Roman numeral
- MCDVIII
- Binary
- 10110000000
- Octal
- 2600
- Hexadecimal
- 580
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1408, here are decompositions:
- 41 + 1367 = 1408
- 47 + 1361 = 1408
- 89 + 1319 = 1408
- 101 + 1307 = 1408
- 107 + 1301 = 1408
- 131 + 1277 = 1408
- 149 + 1259 = 1408
- 179 + 1229 = 1408
Showing the first eight; more decompositions exist.
Unicode codepoint
ր
U+0580
Lowercase letter (Ll)
UTF-8 encoding: D6 80 (2 bytes).
Hex color
#000580
RGB(0, 5, 128)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.128.