18,122
18,122 is a composite number, even.
18,122 (eighteen thousand one hundred twenty-two) is an even 5-digit number. It is a composite number with 16 divisors, and factors as 2 × 13 × 17 × 41. Written other ways, in hexadecimal, 0x46CA.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 14
- Digit product
- 32
- Digital root
- 5
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 22,181
- Recamán's sequence
- a(15,600) = 18,122
- Square (n²)
- 328,406,884
- Cube (n³)
- 5,951,389,551,848
- Divisor count
- 16
- σ(n) — sum of divisors
- 31,752
- φ(n) — Euler's totient
- 7,680
- Sum of prime factors
- 73
Primality
Prime factorization: 2 × 13 × 17 × 41
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√18,122 = [134; (1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 268)]
Period length 11 — the block in parentheses repeats forever.
Representations
- In words
- eighteen thousand one hundred twenty-two
- Ordinal
- 18122nd
- Binary
- 100011011001010
- Octal
- 43312
- Hexadecimal
- 0x46CA
- Base64
- Rso=
- One's complement
- 47,413 (16-bit)
- Scientific notation
- 1.8122 × 10⁴
- As a duration
- 18,122 s = 5 hours, 2 minutes, 2 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹𒁹 𒁹𒁹 𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ιηρκβʹ
- Mayan (base 20)
- 𝋢·𝋥·𝋦·𝋢
- Chinese
- 一萬八千一百二十二
- Chinese (financial)
- 壹萬捌仟壹佰貳拾貳
Digit at this position in famous constants
- π — Pi (π)
- Digit 18,122 = 7
- e — Euler's number (e)
- Digit 18,122 = 8
- φ — Golden ratio (φ)
- Digit 18,122 = 5
- √2 — Pythagoras's (√2)
- Digit 18,122 = 3
- ln 2 — Natural log of 2
- Digit 18,122 = 5
- γ — Euler-Mascheroni (γ)
- Digit 18,122 = 4
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 18122, here are decompositions:
- 3 + 18119 = 18122
- 61 + 18061 = 18122
- 73 + 18049 = 18122
- 79 + 18043 = 18122
- 109 + 18013 = 18122
- 151 + 17971 = 18122
- 163 + 17959 = 18122
- 193 + 17929 = 18122
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 9B 8A (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.70.202.
- Address
- 0.0.70.202
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.70.202
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 18,122 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C♯10 (17739.7 Hz, +37¢)
- Scientific pitch (C4 = 256 Hz): D10 (18390.4 Hz, -25¢)
- Baroque pitch (A4 = 415 Hz): D10 (17726.7 Hz, +38¢)
The digit sequence 18122 first appears in π at position 32,644 of the decimal expansion (the 32,644ordinal-suffix:th 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.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.