Live analysis

2,520

2,520 is a composite number, even.

This number doesn't have a permanent NumberWiki page yet — what you see below is computed live. Pages get added to the permanent index when they're notable (years, primes, curated, etc.).

Abundant Number Harshad / Niven

Properties

Parity: Even
Digit count: 4
Digit sum: 9
Digital root: 9
Palindrome: No
Divisor count: 48
σ(n) — sum of divisors: 9,360

Primality

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

Divisors & multiples

All divisors (48)

1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 · 10 · 12 · 14 · 15 · 18 · 20 · 21 · 24 · 28 · 30 · 35 · 36 · 40 · 42 · 45 · 56 · 60 · 63 · 70 · 72 · 84 · 90 · 105 · 120 · 126 · 140 · 168 · 180 · 210 · 252 · 280 · 315 · 360 · 420 · 504 · 630 · 840 · 1260 · 2520

Aliquot sum (sum of proper divisors): 6,840

Factor pairs (a × b = 2,520)

1 × 2520

2 × 1260

3 × 840

4 × 630

5 × 504

6 × 420

7 × 360

8 × 315

9 × 280

10 × 252

12 × 210

14 × 180

15 × 168

18 × 140

20 × 126

21 × 120

24 × 105

28 × 90

30 × 84

35 × 72

36 × 70

40 × 63

42 × 60

45 × 56

First multiples

2,520 · 5,040 · 7,560 · 10,080 · 12,600 · 15,120 · 17,640 · 20,160 · 22,680 · 25,200

Representations

In words: two thousand five hundred twenty
Ordinal: 2520th
Roman numeral: MMDXX
Binary: 100111011000
Octal: 4730
Hexadecimal: 9D8

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 2520, here are decompositions:

17 + 2503 = 2520
43 + 2477 = 2520
47 + 2473 = 2520
53 + 2467 = 2520
61 + 2459 = 2520
73 + 2447 = 2520
79 + 2441 = 2520
83 + 2437 = 2520

Showing the first eight; more decompositions exist.

Hex color

#0009D8

RGB(0, 9, 216)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.9.216.