16,990
16,990 is a composite number, even.
16,990 (sixteen thousand nine hundred ninety) is an even 5-digit number. It is a composite number with 8 divisors, and factors as 2 × 5 × 1,699. Written other ways, in hexadecimal, 0x425E.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 25
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 9,961
- Flips to (rotate 180°)
- 6,691
- Recamán's sequence
- a(44,431) = 16,990
- Square (n²)
- 288,660,100
- Cube (n³)
- 4,904,335,099,000
- Divisor count
- 8
- σ(n) — sum of divisors
- 30,600
- φ(n) — Euler's totient
- 6,792
- Sum of prime factors
- 1,706
Primality
Prime factorization: 2 × 5 × 1699
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√16,990 = [130; (2, 1, 8, 3, 9, 1, 2, 2, 1, 1, 11, 1, 4, 1, 2, 1, 17, 1, 7, 2, 6, 4, 1, 2, …)]
Representations
- In words
- sixteen thousand nine hundred ninety
- Ordinal
- 16990th
- Binary
- 100001001011110
- Octal
- 41136
- Hexadecimal
- 0x425E
- Base64
- Ql4=
- One's complement
- 48,545 (16-bit)
- Scientific notation
- 1.699 × 10⁴
- As a duration
- 16,990 s = 4 hours, 43 minutes, 10 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹 𒌋
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ιϛϡϟʹ
- Mayan (base 20)
- 𝋢·𝋢·𝋩·𝋪
- Chinese
- 一萬六千九百九十
- Chinese (financial)
- 壹萬陸仟玖佰玖拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 16,990 = 1
- e — Euler's number (e)
- Digit 16,990 = 2
- φ — Golden ratio (φ)
- Digit 16,990 = 4
- √2 — Pythagoras's (√2)
- Digit 16,990 = 8
- ln 2 — Natural log of 2
- Digit 16,990 = 2
- γ — Euler-Mascheroni (γ)
- Digit 16,990 = 2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 16990, here are decompositions:
- 3 + 16987 = 16990
- 11 + 16979 = 16990
- 47 + 16943 = 16990
- 53 + 16937 = 16990
- 59 + 16931 = 16990
- 89 + 16901 = 16990
- 101 + 16889 = 16990
- 107 + 16883 = 16990
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 89 9E (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.66.94.
- Address
- 0.0.66.94
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.66.94
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 16,990 Hz is closest to:
- Concert pitch (A4 = 440 Hz): C10 (16744 Hz, +25¢)
- Scientific pitch (C4 = 256 Hz): C♯10 (17358.2 Hz, -37¢)
- Baroque pitch (A4 = 415 Hz): C♯10 (16731.8 Hz, +27¢)
The digit sequence 16990 first appears in π at position 62,196 of the decimal expansion (the 62,196ordinal-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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.