138,689
138,689 is a composite number, odd.
138,689 (one hundred thirty-eight thousand six hundred eighty-nine) is an odd 6-digit number. It is a composite number with 4 divisors, and factors as 331 × 419. Written other ways, in hexadecimal, 0x21DC1.
Interestingness
Properties
- Parity
- Odd
- Digit count
- 6
- Digit sum
- 35
- Digit product
- 10,368
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 986,831
- Recamán's sequence
- a(491,449) = 138,689
- Square (n²)
- 19,234,638,721
- Cube (n³)
- 2,667,632,809,576,769
- Divisor count
- 4
- σ(n) — sum of divisors
- 139,440
- φ(n) — Euler's totient
- 137,940
- Sum of prime factors
- 750
Primality
Prime factorization: 331 × 419
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,689 = [372; (2, 2, 3, 1, 2, 1, 1, 29, 4, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 3, 3, 2, 4, 4, …)]
Representations
- In words
- one hundred thirty-eight thousand six hundred eighty-nine
- Ordinal
- 138689th
- Binary
- 100001110111000001
- Octal
- 416701
- Hexadecimal
- 0x21DC1
- Base64
- Ah3B
- One's complement
- 4,294,828,606 (32-bit)
- Scientific notation
- 1.38689 × 10⁵
- As a duration
- 138,689 s = 1 day, 14 hours, 31 minutes, 29 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληχπθʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋮·𝋩
- Chinese
- 一十三萬八千六百八十九
- Chinese (financial)
- 壹拾參萬捌仟陸佰捌拾玖
Also seen as
UTF-8 encoding: F0 A1 B7 81 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.29.193.
- Address
- 0.2.29.193
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.29.193
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 138,689 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.