16,427
16,427 is a prime, odd.
16,427 (sixteen thousand four hundred twenty-seven) is an odd 5-digit number. It is a prime number — divisible only by 1 and itself. Written other ways, in hexadecimal, 0x402B.
Interestingness
Properties
Primality
16,427 is prime. It has exactly two divisors: 1 and itself.
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√16,427 = [128; (5, 1, 22, 2, 7, 1, 3, 1, 1, 6, 5, 3, 3, 6, 1, 1, 1, 2, 13, 8, 1, 3, 4, 11, …)]
Period length 58 — the block in parentheses repeats forever.
Representations
- In words
- sixteen thousand four hundred twenty-seven
- Ordinal
- 16427th
- Binary
- 100000000101011
- Octal
- 40053
- Hexadecimal
- 0x402B
- Base64
- QCs=
- One's complement
- 49,108 (16-bit)
- Scientific notation
- 1.6427 × 10⁴
- As a duration
- 16,427 s = 4 hours, 33 minutes, 47 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιϛυκζʹ
- Mayan (base 20)
- 𝋢·𝋡·𝋡·𝋧
- Chinese
- 一萬六千四百二十七
- Chinese (financial)
- 壹萬陸仟肆佰貳拾柒
Digit at this position in famous constants
- π — Pi (π)
- Digit 16,427 = 0
- e — Euler's number (e)
- Digit 16,427 = 4
- φ — Golden ratio (φ)
- Digit 16,427 = 3
- √2 — Pythagoras's (√2)
- Digit 16,427 = 7
- ln 2 — Natural log of 2
- Digit 16,427 = 8
- γ — Euler-Mascheroni (γ)
- Digit 16,427 = 3
Also seen as
UTF-8 encoding: E4 80 AB (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.64.43.
- Address
- 0.0.64.43
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.64.43
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 16,427 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C10 (16744 Hz, -33¢)
- Scientific pitch (C4 = 256 Hz): C10 (16384 Hz, +5¢)
- Baroque pitch (A4 = 415 Hz): C♯10 (16731.8 Hz, -32¢)
The digit sequence 16427 first appears in π at position 70,982 of the decimal expansion (the 70,982ordinal-suffix:nd 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
- Prime numbers — The building blocks of arithmetic: what primes are, why they matter, and how we find them.
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.