159,440
159,440 is a composite number, even.
159,440 (one hundred fifty-nine thousand four hundred forty) is an even 6-digit number. It is a composite number with 20 divisors, and factors as 2⁴ × 5 × 1,993. Its proper divisors sum to 211,444, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x26ED0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 44,951
- Square (n²)
- 25,421,113,600
- Cube (n³)
- 4,053,142,352,384,000
- Divisor count
- 20
- σ(n) — sum of divisors
- 370,884
- φ(n) — Euler's totient
- 63,744
- Sum of prime factors
- 2,006
Primality
Prime factorization: 2 4 × 5 × 1993
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√159,440 = [399; (3, 2, 1, 15, 1, 1, 2, 19, 12, 2, 2, 1, 9, 2, 1, 1, 9, 1, 10, 2, 1, 11, 1, 4, …)]
Representations
- In words
- one hundred fifty-nine thousand four hundred forty
- Ordinal
- 159440th
- Binary
- 100110111011010000
- Octal
- 467320
- Hexadecimal
- 0x26ED0
- Base64
- Am7Q
- One's complement
- 4,294,807,855 (32-bit)
- Scientific notation
- 1.5944 × 10⁵
- As a duration
- 159,440 s = 1 day, 20 hours, 17 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρνθυμʹ
- Mayan (base 20)
- 𝋳·𝋲·𝋬·𝋠
- Chinese
- 一十五萬九千四百四十
- Chinese (financial)
- 壹拾伍萬玖仟肆佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 159440, here are decompositions:
- 3 + 159437 = 159440
- 19 + 159421 = 159440
- 37 + 159403 = 159440
- 79 + 159361 = 159440
- 103 + 159337 = 159440
- 241 + 159199 = 159440
- 271 + 159169 = 159440
- 283 + 159157 = 159440
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A6 BB 90 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.110.208.
- Address
- 0.2.110.208
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.110.208
Unspecified address (0.0.0.0/8) — "this network" placeholder.
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 159,440 and was likely granted around 1873.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
Related reading
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.