87,104
87,104 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 20
- Digit product
- 0
- Digital root
- 2
- Palindrome
- No
- Bit width
- 17 bits
- Reversed
- 40,178
- Square (n²)
- 7,587,106,816
- Cube (n³)
- 660,867,352,100,864
- Divisor count
- 14
- σ(n) — sum of divisors
- 172,974
- φ(n) — Euler's totient
- 43,520
- Sum of prime factors
- 1,373
Primality
Prime factorization: 2 6 × 1361
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- eighty-seven thousand one hundred four
- Ordinal
- 87104th
- Binary
- 10101010001000000
- Octal
- 252100
- Hexadecimal
- 0x15440
- Base64
- AVRA
- One's complement
- 4,294,880,191 (32-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵πζρδʹ
- Mayan (base 20)
- 𝋪·𝋱·𝋯·𝋤
- Chinese
- 八萬七千一百零四
- Chinese (financial)
- 捌萬柒仟壹佰零肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 87,104 = 2
- e — Euler's number (e)
- Digit 87,104 = 9
- φ — Golden ratio (φ)
- Digit 87,104 = 6
- √2 — Pythagoras's (√2)
- Digit 87,104 = 7
- ln 2 — Natural log of 2
- Digit 87,104 = 3
- γ — Euler-Mascheroni (γ)
- Digit 87,104 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 87104, here are decompositions:
- 67 + 87037 = 87104
- 181 + 86923 = 87104
- 337 + 86767 = 87104
- 571 + 86533 = 87104
- 613 + 86491 = 87104
- 643 + 86461 = 87104
- 691 + 86413 = 87104
- 733 + 86371 = 87104
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.1.84.64.
- Address
- 0.1.84.64
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.1.84.64
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This passes the ABA routing number checksum and matches the Federal Reserve numbering scheme.
Banks operate many routing numbers per state and division; an unmatched checksum-valid number can still be a real RTN at a smaller institution.
The digit sequence 87104 first appears in π at position 422,059 of the decimal expansion (the 422,059ordinal-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.