Live analysis

20,000

20,000 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: 5
Digit sum: 2
Digital root: 2
Palindrome: No
Divisor count: 30
σ(n) — sum of divisors: 49,203

Primality

Prime factorization: 2 ⁵ × 5 ⁴

Divisors & multiples

All divisors (30)

1 · 2 · 4 · 5 · 8 · 10 · 16 · 20 · 25 · 32 · 40 · 50 · 80 · 100 · 125 · 160 · 200 · 250 · 400 · 500 · 625 · 800 · 1000 · 1250 · 2000 · 2500 · 4000 · 5000 · 10000 · 20000

Aliquot sum (sum of proper divisors): 29,203

Factor pairs (a × b = 20,000)

1 × 20000

2 × 10000

4 × 5000

5 × 4000

8 × 2500

10 × 2000

16 × 1250

20 × 1000

25 × 800

32 × 625

40 × 500

50 × 400

80 × 250

100 × 200

125 × 160

First multiples

20,000 · 40,000 · 60,000 · 80,000 · 100,000 · 120,000 · 140,000 · 160,000 · 180,000 · 200,000

Representations

In words: twenty thousand
Ordinal: 20000th
Binary: 100111000100000
Octal: 47040
Hexadecimal: 4E20

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 20000, here are decompositions:

3 + 19997 = 20000
7 + 19993 = 20000
37 + 19963 = 20000
73 + 19927 = 20000
109 + 19891 = 20000
139 + 19861 = 20000
157 + 19843 = 20000
181 + 19819 = 20000

Showing the first eight; more decompositions exist.

Unicode codepoint

丠

CJK Unified Ideograph-4E20

U+4E20

Other letter (Lo)

UTF-8 encoding: E4 B8 A0 (3 bytes).

Lookup U+4E20 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#004E20

RGB(0, 78, 32)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.78.32.