Number
1,378
1,378 is a composite number, even, a calendar year.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 19
- Digital root
- 1
- Palindrome
- No
- Divisor count
- 8
- σ(n) — sum of divisors
- 2,268
Primality
Prime factorization: 2 × 13 × 53
Divisors & multiples
Aliquot sum (sum of proper divisors):
890
First multiples
Representations
- In words
- one thousand three hundred seventy-eight
- Ordinal
- 1378th
- Roman numeral
- MCCCLXXVIII
- Binary
- 10101100010
- Octal
- 2542
- Hexadecimal
- 562
Also seen as
Goldbach decomposition
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1378, here are decompositions:
- 5 + 1373 = 1378
- 11 + 1367 = 1378
- 17 + 1361 = 1378
- 59 + 1319 = 1378
- 71 + 1307 = 1378
- 89 + 1289 = 1378
- 101 + 1277 = 1378
- 149 + 1229 = 1378
Showing the first eight; more decompositions exist.
Unicode codepoint
բ
U+0562
Lowercase letter (Ll)
UTF-8 encoding: D5 A2 (2 bytes).
Hex color
#000562
RGB(0, 5, 98)
IPv4 address
As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.98.