138,108
138,108 is a composite number, even.
138,108 (one hundred thirty-eight thousand one hundred eight) is an even 6-digit number. It is a composite number with 24 divisors, and factors as 2² × 3 × 17 × 677. Its proper divisors sum to 203,604, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21B7C.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 801,831
- Recamán's sequence
- a(492,611) = 138,108
- Square (n²)
- 19,073,819,664
- Cube (n³)
- 2,634,247,086,155,712
- Divisor count
- 24
- σ(n) — sum of divisors
- 341,712
- φ(n) — Euler's totient
- 43,264
- Sum of prime factors
- 701
Primality
Prime factorization: 2 2 × 3 × 17 × 677
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,108 = [371; (1, 1, 1, 2, 3, 1, 2, 5, 3, 1, 2, 2, 1, 1, 2, 1, 4, 5, 1, 13, 2, 4, 1, 56, …)]
Representations
- In words
- one hundred thirty-eight thousand one hundred eight
- Ordinal
- 138108th
- Binary
- 100001101101111100
- Octal
- 415574
- Hexadecimal
- 0x21B7C
- Base64
- Aht8
- One's complement
- 4,294,829,187 (32-bit)
- Scientific notation
- 1.38108 × 10⁵
- As a duration
- 138,108 s = 1 day, 14 hours, 21 minutes, 48 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληρηʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋥·𝋨
- Chinese
- 一十三萬八千一百零八
- Chinese (financial)
- 壹拾參萬捌仟壹佰零捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138108, here are decompositions:
- 7 + 138101 = 138108
- 29 + 138079 = 138108
- 31 + 138077 = 138108
- 37 + 138071 = 138108
- 67 + 138041 = 138108
- 101 + 138007 = 138108
- 109 + 137999 = 138108
- 151 + 137957 = 138108
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 AD BC (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.124.
- Address
- 0.2.27.124
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.124
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 138,108 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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.