16,920
16,920 is a composite number, even.
16,920 (sixteen thousand nine hundred twenty) is an even 5-digit number. It is a composite number with 48 divisors, and factors as 2³ × 3² × 5 × 47. Its proper divisors sum to 39,240, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x4218.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 18
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 2,961
- Recamán's sequence
- a(17,396) = 16,920
- Square (n²)
- 286,286,400
- Cube (n³)
- 4,843,965,888,000
- Divisor count
- 48
- σ(n) — sum of divisors
- 56,160
- φ(n) — Euler's totient
- 4,416
- Sum of prime factors
- 64
Primality
Prime factorization: 2 3 × 3 2 × 5 × 47
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√16,920 = [130; (13, 260)]
Period length 2 — the block in parentheses repeats forever.
Representations
- In words
- sixteen thousand nine hundred twenty
- Ordinal
- 16920th
- Binary
- 100001000011000
- Octal
- 41030
- Hexadecimal
- 0x4218
- Base64
- Qhg=
- One's complement
- 48,615 (16-bit)
- Scientific notation
- 1.692 × 10⁴
- As a duration
- 16,920 s = 4 hours, 42 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆
- Greek (Milesian)
- ͵ιϛϡκʹ
- Mayan (base 20)
- 𝋢·𝋢·𝋦·𝋠
- Chinese
- 一萬六千九百二十
- Chinese (financial)
- 壹萬陸仟玖佰貳拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 16,920 = 7
- e — Euler's number (e)
- Digit 16,920 = 3
- φ — Golden ratio (φ)
- Digit 16,920 = 1
- √2 — Pythagoras's (√2)
- Digit 16,920 = 9
- ln 2 — Natural log of 2
- Digit 16,920 = 9
- γ — Euler-Mascheroni (γ)
- Digit 16,920 = 6
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 16920, here are decompositions:
- 17 + 16903 = 16920
- 19 + 16901 = 16920
- 31 + 16889 = 16920
- 37 + 16883 = 16920
- 41 + 16879 = 16920
- 89 + 16831 = 16920
- 97 + 16823 = 16920
- 109 + 16811 = 16920
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 88 98 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.66.24.
- Address
- 0.0.66.24
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.66.24
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 16,920 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C10 (16744 Hz, +18¢)
- Scientific pitch (C4 = 256 Hz): C♯10 (17358.2 Hz, -44¢)
- Baroque pitch (A4 = 415 Hz): C♯10 (16731.8 Hz, +19¢)
The digit sequence 16920 first appears in π at position 119,746 of the decimal expansion (the 119,746ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.