18,008
18,008 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 17
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 80,081
- Flips to (rotate 180°)
- 80,081
- Recamán's sequence
- a(8,144) = 18,008
- Square (n²)
- 324,288,064
- Cube (n³)
- 5,839,779,456,512
- Divisor count
- 8
- σ(n) — sum of divisors
- 33,780
- φ(n) — Euler's totient
- 9,000
- Sum of prime factors
- 2,257
Primality
Prime factorization: 2 3 × 2251
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- eighteen thousand eight
- Ordinal
- 18008th
- Binary
- 100011001011000
- Octal
- 43130
- Hexadecimal
- 0x4658
- Base64
- Rlg=
- One's complement
- 47,527 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 · 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιηηʹ
- Mayan (base 20)
- 𝋢·𝋥·𝋠·𝋨
- Chinese
- 一萬八千零八
- Chinese (financial)
- 壹萬捌仟零捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 18,008 = 1
- e — Euler's number (e)
- Digit 18,008 = 3
- φ — Golden ratio (φ)
- Digit 18,008 = 6
- √2 — Pythagoras's (√2)
- Digit 18,008 = 4
- ln 2 — Natural log of 2
- Digit 18,008 = 5
- γ — Euler-Mascheroni (γ)
- Digit 18,008 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 18008, here are decompositions:
- 19 + 17989 = 18008
- 31 + 17977 = 18008
- 37 + 17971 = 18008
- 79 + 17929 = 18008
- 97 + 17911 = 18008
- 127 + 17881 = 18008
- 157 + 17851 = 18008
- 181 + 17827 = 18008
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 99 98 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.70.88.
- Address
- 0.0.70.88
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.70.88
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 18008 first appears in π at position 176,041 of the decimal expansion (the 176,041ordinal-suffix:st digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.