16,808
16,808 is a composite number, even.
16,808 (sixteen thousand eight hundred eight) is an even 5-digit number. It is a composite number with 16 divisors, and factors as 2³ × 11 × 191. Its proper divisors sum to 17,752, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x41A8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 23
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 80,861
- Flips to (rotate 180°)
- 80,891
- Recamán's sequence
- a(17,620) = 16,808
- Square (n²)
- 282,508,864
- Cube (n³)
- 4,748,408,986,112
- Divisor count
- 16
- σ(n) — sum of divisors
- 34,560
- φ(n) — Euler's totient
- 7,600
- Sum of prime factors
- 208
Primality
Prime factorization: 2 3 × 11 × 191
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√16,808 = [129; (1, 1, 1, 4, 1, 1, 1, 2, 36, 1, 1, 1, 36, 2, 1, 1, 1, 4, 1, 1, 1, 258)]
Period length 22 — the block in parentheses repeats forever.
Representations
- In words
- sixteen thousand eight hundred eight
- Ordinal
- 16808th
- Binary
- 100000110101000
- Octal
- 40650
- Hexadecimal
- 0x41A8
- Base64
- Qag=
- One's complement
- 48,727 (16-bit)
- Scientific notation
- 1.6808 × 10⁴
- As a duration
- 16,808 s = 4 hours, 40 minutes, 8 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιϛωηʹ
- Mayan (base 20)
- 𝋢·𝋢·𝋠·𝋨
- Chinese
- 一萬六千八百零八
- Chinese (financial)
- 壹萬陸仟捌佰零捌
Digit at this position in famous constants
- π — Pi (π)
- Digit 16,808 = 6
- e — Euler's number (e)
- Digit 16,808 = 4
- φ — Golden ratio (φ)
- Digit 16,808 = 3
- √2 — Pythagoras's (√2)
- Digit 16,808 = 5
- ln 2 — Natural log of 2
- Digit 16,808 = 5
- γ — Euler-Mascheroni (γ)
- Digit 16,808 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 16808, here are decompositions:
- 61 + 16747 = 16808
- 67 + 16741 = 16808
- 79 + 16729 = 16808
- 109 + 16699 = 16808
- 151 + 16657 = 16808
- 157 + 16651 = 16808
- 241 + 16567 = 16808
- 331 + 16477 = 16808
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 86 A8 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.65.168.
- Address
- 0.0.65.168
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.65.168
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 16,808 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C10 (16744 Hz, +7¢)
- Scientific pitch (C4 = 256 Hz): C10 (16384 Hz, +44¢)
- Baroque pitch (A4 = 415 Hz): C♯10 (16731.8 Hz, +8¢)
The digit sequence 16808 first appears in π at position 21,361 of the decimal expansion (the 21,361ordinal-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.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.