80,040
80,040 is a composite number, even.
80,040 (eighty thousand forty) is an even 5-digit number. It is a composite number with 64 divisors, and factors as 2³ × 3 × 5 × 23 × 29. Its proper divisors sum to 179,160, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x138A8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 12
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 4,008
- Recamán's sequence
- a(120,027) = 80,040
- Square (n²)
- 6,406,401,600
- Cube (n³)
- 512,768,384,064,000
- Divisor count
- 64
- σ(n) — sum of divisors
- 259,200
- φ(n) — Euler's totient
- 19,712
- Sum of prime factors
- 66
Primality
Prime factorization: 2 3 × 3 × 5 × 23 × 29
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√80,040 = [282; (1, 10, 1, 1, 4, 1, 1, 2, 1, 3, 1, 22, 1, 3, 1, 2, 1, 1, 4, 1, 1, 10, 1, 564)]
Period length 24 — the block in parentheses repeats forever.
Representations
- In words
- eighty thousand forty
- Ordinal
- 80040th
- Binary
- 10011100010101000
- Octal
- 234250
- Hexadecimal
- 0x138A8
- Base64
- ATio
- One's complement
- 4,294,887,255 (32-bit)
- Scientific notation
- 8.004 × 10⁴
- As a duration
- 80,040 s = 22 hours, 14 minutes
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹 𒌋𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵πμʹ
- Mayan (base 20)
- 𝋪·𝋠·𝋢·𝋠
- Chinese
- 八萬零四十
- Chinese (financial)
- 捌萬零肆拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 80,040 = 5
- e — Euler's number (e)
- Digit 80,040 = 5
- φ — Golden ratio (φ)
- Digit 80,040 = 4
- √2 — Pythagoras's (√2)
- Digit 80,040 = 8
- ln 2 — Natural log of 2
- Digit 80,040 = 7
- γ — Euler-Mascheroni (γ)
- Digit 80,040 = 2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 80040, here are decompositions:
- 19 + 80021 = 80040
- 41 + 79999 = 80040
- 43 + 79997 = 80040
- 53 + 79987 = 80040
- 61 + 79979 = 80040
- 67 + 79973 = 80040
- 73 + 79967 = 80040
- 97 + 79943 = 80040
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 93 A2 A8 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.1.56.168.
- Address
- 0.1.56.168
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.56.168
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 80040 first appears in π at position 107,079 of the decimal expansion (the 107,079ordinal-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°.