138,748
138,748 is a composite number, even.
138,748 (one hundred thirty-eight thousand seven hundred forty-eight) is an even 6-digit number. It is a composite number with 6 divisors, and factors as 2² × 34,687. Written other ways, in hexadecimal, 0x21DFC.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 31
- Digit product
- 5,376
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 847,831
- Recamán's sequence
- a(491,331) = 138,748
- Square (n²)
- 19,251,007,504
- Cube (n³)
- 2,671,038,789,164,992
- Divisor count
- 6
- σ(n) — sum of divisors
- 242,816
- φ(n) — Euler's totient
- 69,372
- Sum of prime factors
- 34,691
Primality
Prime factorization: 2 2 × 34687
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,748 = [372; (2, 22, 13, 3, 1, 6, 2, 2, 4, 3, 1, 1, 2, 1, 7, 2, 7, 18, 27, 1, 1, 6, 3, 14, …)]
Representations
- In words
- one hundred thirty-eight thousand seven hundred forty-eight
- Ordinal
- 138748th
- Binary
- 100001110111111100
- Octal
- 416774
- Hexadecimal
- 0x21DFC
- Base64
- Ah38
- One's complement
- 4,294,828,547 (32-bit)
- Scientific notation
- 1.38748 × 10⁵
- As a duration
- 138,748 s = 1 day, 14 hours, 32 minutes, 28 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληψμηʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋱·𝋨
- Chinese
- 一十三萬八千七百四十八
- Chinese (financial)
- 壹拾參萬捌仟柒佰肆拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138748, here are decompositions:
- 17 + 138731 = 138748
- 101 + 138647 = 138748
- 107 + 138641 = 138748
- 131 + 138617 = 138748
- 149 + 138599 = 138748
- 167 + 138581 = 138748
- 179 + 138569 = 138748
- 251 + 138497 = 138748
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B7 BC (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.29.252.
- Address
- 0.2.29.252
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.29.252
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 138,748 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.