16,404
16,404 is a composite number, even.
Properties
- Parity
- Even
- Digit count
- 5
- Digit sum
- 15
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 15 bits
- Reversed
- 40,461
- Recamán's sequence
- a(17,904) = 16,404
- Square (n²)
- 269,091,216
- Cube (n³)
- 4,414,172,307,264
- Divisor count
- 12
- σ(n) — sum of divisors
- 38,304
- φ(n) — Euler's totient
- 5,464
- Sum of prime factors
- 1,374
Primality
Prime factorization: 2 2 × 3 × 1367
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- sixteen thousand four hundred four
- Ordinal
- 16404th
- Binary
- 100000000010100
- Octal
- 40024
- Hexadecimal
- 0x4014
- Base64
- QBQ=
- One's complement
- 49,131 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ιϛυδʹ
- Mayan (base 20)
- 𝋢·𝋡·𝋠·𝋤
- Chinese
- 一萬六千四百零四
- Chinese (financial)
- 壹萬陸仟肆佰零肆
Digit at this position in famous constants
- π — Pi (π)
- Digit 16,404 = 2
- e — Euler's number (e)
- Digit 16,404 = 4
- φ — Golden ratio (φ)
- Digit 16,404 = 0
- √2 — Pythagoras's (√2)
- Digit 16,404 = 6
- ln 2 — Natural log of 2
- Digit 16,404 = 1
- γ — Euler-Mascheroni (γ)
- Digit 16,404 = 8
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 16404, here are decompositions:
- 23 + 16381 = 16404
- 41 + 16363 = 16404
- 43 + 16361 = 16404
- 71 + 16333 = 16404
- 103 + 16301 = 16404
- 131 + 16273 = 16404
- 137 + 16267 = 16404
- 151 + 16253 = 16404
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 80 94 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.64.20.
- Address
- 0.0.64.20
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.64.20
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 16404 first appears in π at position 14,939 of the decimal expansion (the 14,939ordinal-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.