number.wiki
Number

380

380 is a composite number, even, a calendar year.

Abundant Number Pronic / Oblong Year

Properties

Parity
Even
Digit count
3
Digit sum
11
Digital root
2
Palindrome
No
Divisor count
12
σ(n) — sum of divisors
840

Primality

Prime factorization: 2 2 × 5 × 19

Divisors & multiples

All divisors (12)
1 · 2 · 4 · 5 · 10 · 19 · 20 · 38 · 76 · 95 · 190 · 380
Aliquot sum (sum of proper divisors): 460
Factor pairs (a × b = 380)
1 × 380
2 × 190
4 × 95
5 × 76
10 × 38
19 × 20
First multiples
380 · 760 · 1,140 · 1,520 · 1,900 · 2,280 · 2,660 · 3,040 · 3,420 · 3,800

Representations

In words
three hundred eighty
Ordinal
380th
Roman numeral
CCCLXXX
Binary
101111100
Octal
574
Hexadecimal
17C

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 380, here are decompositions:

  • 7 + 373 = 380
  • 13 + 367 = 380
  • 31 + 349 = 380
  • 43 + 337 = 380
  • 67 + 313 = 380
  • 73 + 307 = 380
  • 97 + 283 = 380
  • 103 + 277 = 380

Showing the first eight; more decompositions exist.

Unicode codepoint
ż
U+017C
Lowercase letter (Ll)

UTF-8 encoding: C5 BC (2 bytes).

Lookup U+017C on Compart ↗ Lookup on FileFormat.Info ↗
Hex color
#00017C
RGB(0, 1, 124)
IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.1.124.