Number

1,320

1,320 is a composite number, even, a calendar year.

Abundant Number Harshad / Niven Year

Properties

Parity: Even
Digit count: 4
Digit sum: 6
Digital root: 6
Palindrome: No
Divisor count: 32
σ(n) — sum of divisors: 4,320

Primality

Prime factorization: 2 ³ × 3 × 5 × 11

Divisors & multiples

All divisors (32)

1 · 2 · 3 · 4 · 5 · 6 · 8 · 10 · 11 · 12 · 15 · 20 · 22 · 24 · 30 · 33 · 40 · 44 · 55 · 60 · 66 · 88 · 110 · 120 · 132 · 165 · 220 · 264 · 330 · 440 · 660 · 1320

Aliquot sum (sum of proper divisors): 3,000

Factor pairs (a × b = 1,320)

1 × 1320

2 × 660

3 × 440

4 × 330

5 × 264

6 × 220

8 × 165

10 × 132

11 × 120

12 × 110

15 × 88

20 × 66

22 × 60

24 × 55

30 × 44

33 × 40

First multiples

1,320 · 2,640 · 3,960 · 5,280 · 6,600 · 7,920 · 9,240 · 10,560 · 11,880 · 13,200

Representations

In words: one thousand three hundred twenty
Ordinal: 1320th
Roman numeral: MCCCXX
Binary: 10100101000
Octal: 2450
Hexadecimal: 528

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1320, here are decompositions:

13 + 1307 = 1320
17 + 1303 = 1320
19 + 1301 = 1320
23 + 1297 = 1320
29 + 1291 = 1320
31 + 1289 = 1320
37 + 1283 = 1320
41 + 1279 = 1320

Showing the first eight; more decompositions exist.

Unicode codepoint

U+0528

Uppercase letter (Lu)

UTF-8 encoding: D4 A8 (2 bytes).

Lookup U+0528 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000528

RGB(0, 5, 40)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.5.40.