138,565
138,565 is a composite number, odd.
138,565 (one hundred thirty-eight thousand five hundred sixty-five) is an odd 6-digit number. It is a composite number with 16 divisors, and factors as 5 × 7 × 37 × 107. Written other ways, in hexadecimal, 0x21D45.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 28
- Digit product
- 3,600
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 565,831
- Recamán's sequence
- a(491,697) = 138,565
- Square (n²)
- 19,200,259,225
- Cube (n³)
- 2,660,483,919,512,125
- Divisor count
- 16
- σ(n) — sum of divisors
- 196,992
- φ(n) — Euler's totient
- 91,584
- Sum of prime factors
- 156
Primality
Prime factorization: 5 × 7 × 37 × 107
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,565 = [372; (4, 8, 1, 16, 35, 2, 1, 1, 4, 1, 3, 8, 2, 82, 4, 82, 2, 8, 3, 1, 4, 1, 1, 2, …)]
Period length 30 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand five hundred sixty-five
- Ordinal
- 138565th
- Binary
- 100001110101000101
- Octal
- 416505
- Hexadecimal
- 0x21D45
- Base64
- Ah1F
- One's complement
- 4,294,828,730 (32-bit)
- Scientific notation
- 1.38565 × 10⁵
- As a duration
- 138,565 s = 1 day, 14 hours, 29 minutes, 25 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληφξεʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋨·𝋥
- Chinese
- 一十三萬八千五百六十五
- Chinese (financial)
- 壹拾參萬捌仟伍佰陸拾伍
Also seen as
UTF-8 encoding: F0 A1 B5 85 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.29.69.
- Address
- 0.2.29.69
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.29.69
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 138,565 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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.