Number
1,438
1,438 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 16
- Digital root
- 7
- Palindrome
- No
- Divisor count
- 4
- σ(n) — sum of divisors
- 2,160
Primality
Prime factorization: 2 × 719
Divisors & multiples
Aliquot sum (sum of proper divisors):
722
First multiples
Representations
- In words
- one thousand four hundred thirty-eight
- Ordinal
- 1438th
- Roman numeral
- MCDXXXVIII
- Binary
- 10110011110
- Octal
- 2636
- Hexadecimal
- 59E
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1438, here are decompositions:
- 5 + 1433 = 1438
- 11 + 1427 = 1438
- 29 + 1409 = 1438
- 71 + 1367 = 1438
- 131 + 1307 = 1438
- 137 + 1301 = 1438
- 149 + 1289 = 1438
- 179 + 1259 = 1438
Showing the first eight; more decompositions exist.
Unicode codepoint
֞
U+059E
Non-spacing mark (Mn)
UTF-8 encoding: D6 9E (2 bytes).
Hex color
#00059E
RGB(0, 5, 158)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.158.