8,080
8,080 is a composite number, even.
8,080 (eight thousand eighty) is an even 4-digit number. It is a composite number with 20 divisors, and factors as 2⁴ × 5 × 101. Its proper divisors sum to 10,892, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x1F90.
Interestingness
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 16
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 13 bits
- Reversed
- 808
- Flips to (rotate 180°)
- 808
- Recamán's sequence
- a(2,631) = 8,080
- Square (n²)
- 65,286,400
- Cube (n³)
- 527,514,112,000
- Divisor count
- 20
- σ(n) — sum of divisors
- 18,972
- φ(n) — Euler's totient
- 3,200
- Sum of prime factors
- 114
Primality
Prime factorization: 2 4 × 5 × 101
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√8,080 = [89; (1, 7, 1, 178)]
Period length 4 — the block in parentheses repeats forever.
Representations
- In words
- eight thousand eighty
- Ordinal
- 8080th
- Binary
- 1111110010000
- Octal
- 17620
- Hexadecimal
- 0x1F90
- Base64
- H5A=
- One's complement
- 57,455 (16-bit)
- Scientific notation
- 8.08 × 10³
- As a duration
- 8,080 s = 2 hours, 14 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹 𒌋𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ηπʹ
- Mayan (base 20)
- 𝋡·𝋠·𝋤·𝋠
- Chinese
- 八千零八十
- Chinese (financial)
- 捌仟零捌拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 8,080 = 0
- e — Euler's number (e)
- Digit 8,080 = 6
- φ — Golden ratio (φ)
- Digit 8,080 = 7
- √2 — Pythagoras's (√2)
- Digit 8,080 = 2
- ln 2 — Natural log of 2
- Digit 8,080 = 3
- γ — Euler-Mascheroni (γ)
- Digit 8,080 = 9
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 8080, here are decompositions:
- 11 + 8069 = 8080
- 41 + 8039 = 8080
- 71 + 8009 = 8080
- 131 + 7949 = 8080
- 173 + 7907 = 8080
- 179 + 7901 = 8080
- 197 + 7883 = 8080
- 227 + 7853 = 8080
Showing the first eight; more decompositions exist.
UTF-8 encoding: E1 BE 90 (3 bytes).
TCP/UDP port 8080 is the registered port for HTTP-alt — Common HTTP alternate port.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.31.144.
- Address
- 0.0.31.144
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.31.144
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Heard as a frequency, 8,080 Hz is closest to:
- Concert pitch (A4 = 440 Hz): B8 (7902.1 Hz, +39¢)
- Scientific pitch (C4 = 256 Hz): C9 (8192 Hz, -24¢)
- Baroque pitch (A4 = 415 Hz): C9 (7896.3 Hz, +40¢)
The digit sequence 8080 first appears in π at position 11,979 of the decimal expansion (the 11,979ordinal-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.