138,764
138,764 is a composite number, even.
138,764 (one hundred thirty-eight thousand seven hundred sixty-four) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 113 × 307. Written other ways, in hexadecimal, 0x21E0C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 29
- Digit product
- 4,032
- Digital root
- 2
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 467,831
- Recamán's sequence
- a(491,299) = 138,764
- Square (n²)
- 19,255,447,696
- Cube (n³)
- 2,671,962,944,087,744
- Divisor count
- 12
- σ(n) — sum of divisors
- 245,784
- φ(n) — Euler's totient
- 68,544
- Sum of prime factors
- 424
Primality
Prime factorization: 2 2 × 113 × 307
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,764 = [372; (1, 1, 23, 1, 1, 7, 5, 1, 7, 186, 7, 1, 5, 7, 1, 1, 23, 1, 1, 744)]
Period length 20 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand seven hundred sixty-four
- Ordinal
- 138764th
- Binary
- 100001111000001100
- Octal
- 417014
- Hexadecimal
- 0x21E0C
- Base64
- Ah4M
- One's complement
- 4,294,828,531 (32-bit)
- Scientific notation
- 1.38764 × 10⁵
- As a duration
- 138,764 s = 1 day, 14 hours, 32 minutes, 44 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληψξδʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋲·𝋤
- Chinese
- 一十三萬八千七百六十四
- Chinese (financial)
- 壹拾參萬捌仟柒佰陸拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138764, here are decompositions:
- 37 + 138727 = 138764
- 103 + 138661 = 138764
- 127 + 138637 = 138764
- 193 + 138571 = 138764
- 271 + 138493 = 138764
- 313 + 138451 = 138764
- 331 + 138433 = 138764
- 337 + 138427 = 138764
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B8 8C (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.30.12.
- Address
- 0.2.30.12
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.30.12
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 138,764 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.