16,440
16,440 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
- 4,461
- Recamán's sequence
- a(45,079) = 16,440
- Square (n²)
- 270,273,600
- Cube (n³)
- 4,443,297,984,000
- Divisor count
- 32
- σ(n) — sum of divisors
- 49,680
- φ(n) — Euler's totient
- 4,352
- Sum of prime factors
- 151
Primality
Prime factorization: 2 3 × 3 × 5 × 137
Divisors & multiples
Sums & aliquot sequence
Representations
- In words
- sixteen thousand four hundred forty
- Ordinal
- 16440th
- Binary
- 100000000111000
- Octal
- 40070
- Hexadecimal
- 0x4038
- Base64
- QDg=
- One's complement
- 49,095 (16-bit)
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹 ·
- Egyptian hieroglyphic
- 𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ιϛυμʹ
- Mayan (base 20)
- 𝋢·𝋡·𝋢·𝋠
- Chinese
- 一萬六千四百四十
- Chinese (financial)
- 壹萬陸仟肆佰肆拾
Digit at this position in famous constants
- π — Pi (π)
- Digit 16,440 = 0
- e — Euler's number (e)
- Digit 16,440 = 2
- φ — Golden ratio (φ)
- Digit 16,440 = 7
- √2 — Pythagoras's (√2)
- Digit 16,440 = 9
- ln 2 — Natural log of 2
- Digit 16,440 = 9
- γ — Euler-Mascheroni (γ)
- Digit 16,440 = 2
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 16440, here are decompositions:
- 7 + 16433 = 16440
- 13 + 16427 = 16440
- 19 + 16421 = 16440
- 23 + 16417 = 16440
- 29 + 16411 = 16440
- 59 + 16381 = 16440
- 71 + 16369 = 16440
- 79 + 16361 = 16440
Showing the first eight; more decompositions exist.
UTF-8 encoding: E4 80 B8 (3 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.0.64.56.
- Address
- 0.0.64.56
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.0.64.56
Unspecified address (0.0.0.0/8) — "this network" placeholder.
The digit sequence 16440 first appears in π at position 238,901 of the decimal expansion (the 238,901ordinal-suffix:st 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.