138,965
138,965 is a composite number, odd.
138,965 (one hundred thirty-eight thousand nine hundred sixty-five) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 5 × 27,793. Written other ways, in hexadecimal, 0x21ED5.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 32
- Digit product
- 6,480
- Digital root
- 5
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 569,831
- Recamán's sequence
- a(490,897) = 138,965
- Square (n²)
- 19,311,271,225
- Cube (n³)
- 2,683,590,805,782,125
- Divisor count
- 4
- σ(n) — sum of divisors
- 166,764
- φ(n) — Euler's totient
- 111,168
- Sum of prime factors
- 27,798
Primality
Prime factorization: 5 × 27793
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,965 = [372; (1, 3, 1, 1, 4, 1, 3, 2, 1, 8, 1, 2, 1, 9, 1, 3, 8, 8, 3, 1, 9, 1, 2, 1, …)]
Period length 35 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand nine hundred sixty-five
- Ordinal
- 138965th
- Binary
- 100001111011010101
- Octal
- 417325
- Hexadecimal
- 0x21ED5
- Base64
- Ah7V
- One's complement
- 4,294,828,330 (32-bit)
- Scientific notation
- 1.38965 × 10⁵
- As a duration
- 138,965 s = 1 day, 14 hours, 36 minutes, 5 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληϡξεʹ
- Mayan (base 20)
- 𝋱·𝋧·𝋨·𝋥
- Chinese
- 一十三萬八千九百六十五
- Chinese (financial)
- 壹拾參萬捌仟玖佰陸拾伍
Also seen as
UTF-8 encoding: F0 A1 BB 95 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.30.213.
- Address
- 0.2.30.213
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.30.213
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 138,965 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.