2,804
2,804 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 4
- Digit sum
- 14
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 12 bits
- Reversed
- 4,082
- Recamán's sequence
- a(2,647) = 2,804
- Square (n²)
- 7,862,416
- Cube (n³)
- 22,046,214,464
- Divisor count
- 6
- σ(n) — sum of divisors
- 4,914
- φ(n) — Euler's totient
- 1,400
- Sum of prime factors
- 705
Primality
Prime factorization: 2 2 × 701
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- two thousand eight hundred four
- Ordinal
- 2804th
- Roman numeral
- MMDCCCIV
- Binary
- 101011110100
- Octal
- 5364
- Hexadecimal
- 0xAF4
- Base64
- CvQ=
- One's complement
- 62,731 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵βωδʹ
- Mayan (base 20)
- 𝋧·𝋠·𝋤
- Chinese
- 二千八百零四
- Chinese (financial)
- 貳仟捌佰零肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 2,804 = 7
- e — Euler's number (e)
- Digit 2,804 = 3
- φ — Golden ratio (φ)
- Digit 2,804 = 6
- √2 — Pythagoras's (√2)
- Digit 2,804 = 3
- ln 2 — Natural log of 2
- Digit 2,804 = 6
- γ — Euler-Mascheroni (γ)
- Digit 2,804 = 0
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 2804, here are decompositions:
- 3 + 2801 = 2804
- 7 + 2797 = 2804
- 13 + 2791 = 2804
- 37 + 2767 = 2804
- 73 + 2731 = 2804
- 97 + 2707 = 2804
- 127 + 2677 = 2804
- 157 + 2647 = 2804
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.0.10.244.
- Address
- 0.0.10.244
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.10.244
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 2804 first appears in π at position 3,262 of the decimal expansion (the 3,262ordinal-suffix:nd 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.