Live analysis

4,000

4,000 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 Achilles Number Harshad / Niven Powerful Number

Properties

Parity: Even
Digit count: 4
Digit sum: 4
Digital root: 4
Palindrome: No
Divisor count: 24
σ(n) — sum of divisors: 9,828

Primality

Prime factorization: 2 ⁵ × 5 ³

Divisors & multiples

All divisors (24)

1 · 2 · 4 · 5 · 8 · 10 · 16 · 20 · 25 · 32 · 40 · 50 · 80 · 100 · 125 · 160 · 200 · 250 · 400 · 500 · 800 · 1000 · 2000 · 4000

Aliquot sum (sum of proper divisors): 5,828

Factor pairs (a × b = 4,000)

1 × 4000

2 × 2000

4 × 1000

5 × 800

8 × 500

10 × 400

16 × 250

20 × 200

25 × 160

32 × 125

40 × 100

50 × 80

First multiples

4,000 · 8,000 · 12,000 · 16,000 · 20,000 · 24,000 · 28,000 · 32,000 · 36,000 · 40,000

Representations

In words: four thousand
Ordinal: 4000th
Binary: 111110100000
Octal: 7640
Hexadecimal: FA0

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 4000, here are decompositions:

11 + 3989 = 4000
53 + 3947 = 4000
71 + 3929 = 4000
83 + 3917 = 4000
89 + 3911 = 4000
137 + 3863 = 4000
149 + 3851 = 4000
167 + 3833 = 4000

Showing the first eight; more decompositions exist.

Unicode codepoint

ྠ

U+0FA0

Non-spacing mark (Mn)

UTF-8 encoding: E0 BE A0 (3 bytes).

Lookup U+0FA0 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#000FA0

RGB(0, 15, 160)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.15.160.