Live analysis

40,000

40,000 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 Harshad / Niven Perfect Square Powerful Number

Properties

Parity: Even
Digit count: 5
Digit sum: 4
Digital root: 4
Palindrome: No
Reversed: 4
Divisor count: 35
σ(n) — sum of divisors: 99,187

Primality

Prime factorization: 2 ⁶ × 5 ⁴

Divisors & multiples

All divisors (35)

1 · 2 · 4 · 5 · 8 · 10 · 16 · 20 · 25 · 32 · 40 · 50 · 64 · 80 · 100 · 125 · 160 · 200 · 250 · 320 · 400 · 500 · 625 · 800 · 1000 · 1250 · 1600 · 2000 · 2500 · 4000 · 5000 · 8000 · 10000 · 20000 · 40000

Aliquot sum (sum of proper divisors): 59,187

Factor pairs (a × b = 40,000)

1 × 40000

2 × 20000

4 × 10000

5 × 8000

8 × 5000

10 × 4000

16 × 2500

20 × 2000

25 × 1600

32 × 1250

40 × 1000

50 × 800

64 × 625

80 × 500

100 × 400

125 × 320

160 × 250

200 × 200

First multiples

40,000 · 80,000 · 120,000 · 160,000 · 200,000 · 240,000 · 280,000 · 320,000 · 360,000 · 400,000

Representations

In words: forty thousand
Ordinal: 40000th
Binary: 1001110001000000
Octal: 116100
Hexadecimal: 0x9C40
Base64: nEA=

Also seen as

Goldbach decomposition

Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 40000, here are decompositions:

11 + 39989 = 40000
17 + 39983 = 40000
29 + 39971 = 40000
47 + 39953 = 40000
71 + 39929 = 40000
113 + 39887 = 40000
131 + 39869 = 40000
137 + 39863 = 40000

Showing the first eight; more decompositions exist.

Unicode codepoint

鱀

CJK Unified Ideograph-9C40

U+9C40

Other letter (Lo)

UTF-8 encoding: E9 B1 80 (3 bytes).

Lookup U+9C40 on Compart ↗ Lookup on FileFormat.Info ↗

Hex color

#009C40

RGB(0, 156, 64)

IPv4 address

As an unsigned 32-bit integer, this is the IPv4 address 0.0.156.64.

Address: 0.0.156.64
Class: reserved
IPv4-mapped IPv6: ::ffff:0.0.156.64

Unspecified address (0.0.0.0/8) — "this network" placeholder.