Number

1,260

1,260 is a composite number, even, a calendar year.

Abundant Number Harshad / Niven Pronic / Oblong Year

Properties

Parity: Even
Digit count: 4
Digit sum: 9
Digital root: 9
Palindrome: No
Divisor count: 36
σ(n) — sum of divisors: 4,368

Primality

Prime factorization: 2 ² × 3 ² × 5 × 7

Divisors & multiples

All divisors (36)

1 · 2 · 3 · 4 · 5 · 6 · 7 · 9 · 10 · 12 · 14 · 15 · 18 · 20 · 21 · 28 · 30 · 35 · 36 · 42 · 45 · 60 · 63 · 70 · 84 · 90 · 105 · 126 · 140 · 180 · 210 · 252 · 315 · 420 · 630 · 1260

Aliquot sum (sum of proper divisors): 3,108

Factor pairs (a × b = 1,260)

1 × 1260

2 × 630

3 × 420

4 × 315

5 × 252

6 × 210

7 × 180

9 × 140

10 × 126

12 × 105

14 × 90

15 × 84

18 × 70

20 × 63

21 × 60

28 × 45

30 × 42

35 × 36

First multiples

1,260 · 2,520 · 3,780 · 5,040 · 6,300 · 7,560 · 8,820 · 10,080 · 11,340 · 12,600

Representations

In words: one thousand two hundred sixty
Ordinal: 1260th
Roman numeral: MCCLX
Binary: 10011101100
Octal: 2354
Hexadecimal: 4EC

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1260, here are decompositions:

11 + 1249 = 1260
23 + 1237 = 1260
29 + 1231 = 1260
31 + 1229 = 1260
37 + 1223 = 1260
43 + 1217 = 1260
47 + 1213 = 1260
59 + 1201 = 1260

Showing the first eight; more decompositions exist.

Unicode codepoint

U+04EC

Uppercase letter (Lu)

UTF-8 encoding: D3 AC (2 bytes).

Lookup U+04EC on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#0004EC

RGB(0, 4, 236)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.4.236.