138,560
138,560 is a composite number, even.
138,560 (one hundred thirty-eight thousand five hundred sixty) is an even 6-digit number. It is a composite number with 28 divisors, and factors as 2⁶ × 5 × 433. Its proper divisors sum to 192,148, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21D40.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 23
- Digit product
- 0
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 65,831
- Recamán's sequence
- a(491,707) = 138,560
- Square (n²)
- 19,198,873,600
- Cube (n³)
- 2,660,195,926,016,000
- Divisor count
- 28
- σ(n) — sum of divisors
- 330,708
- φ(n) — Euler's totient
- 55,296
- Sum of prime factors
- 450
Primality
Prime factorization: 2 6 × 5 × 433
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,560 = [372; (4, 4, 2, 1, 2, 17, 1, 3, 1, 2, 9, 15, 11, 1, 1, 3, 3, 1, 1, 1, 1, 2, 3, 2, …)]
Representations
- In words
- one hundred thirty-eight thousand five hundred sixty
- Ordinal
- 138560th
- Binary
- 100001110101000000
- Octal
- 416500
- Hexadecimal
- 0x21D40
- Base64
- Ah1A
- One's complement
- 4,294,828,735 (32-bit)
- Scientific notation
- 1.3856 × 10⁵
- As a duration
- 138,560 s = 1 day, 14 hours, 29 minutes, 20 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρληφξʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋨·𝋠
- Chinese
- 一十三萬八千五百六十
- Chinese (financial)
- 壹拾參萬捌仟伍佰陸拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138560, here are decompositions:
- 13 + 138547 = 138560
- 43 + 138517 = 138560
- 67 + 138493 = 138560
- 109 + 138451 = 138560
- 127 + 138433 = 138560
- 157 + 138403 = 138560
- 211 + 138349 = 138560
- 223 + 138337 = 138560
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B5 80 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.29.64.
- Address
- 0.2.29.64
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.29.64
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 138,560 and was likely granted around 1872.
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.