138,736
138,736 is a composite number, even.
138,736 (one hundred thirty-eight thousand seven hundred thirty-six) is an even 6-digit number. It is a composite number with 40 divisors, and factors as 2⁴ × 13 × 23 × 29. Its proper divisors sum to 173,744, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21DF0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 28
- Digit product
- 3,024
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 637,831
- Recamán's sequence
- a(491,355) = 138,736
- Square (n²)
- 19,247,677,696
- Cube (n³)
- 2,670,345,812,832,256
- Divisor count
- 40
- σ(n) — sum of divisors
- 312,480
- φ(n) — Euler's totient
- 59,136
- Sum of prime factors
- 73
Primality
Prime factorization: 2 4 × 13 × 23 × 29
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,736 = [372; (2, 8, 1, 2, 3, 3, 3, 1, 3, 3, 3, 2, 1, 8, 2, 744)]
Period length 16 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand seven hundred thirty-six
- Ordinal
- 138736th
- Binary
- 100001110111110000
- Octal
- 416760
- Hexadecimal
- 0x21DF0
- Base64
- Ah3w
- One's complement
- 4,294,828,559 (32-bit)
- Scientific notation
- 1.38736 × 10⁵
- As a duration
- 138,736 s = 1 day, 14 hours, 32 minutes, 16 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληψλϛʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋰·𝋰
- Chinese
- 一十三萬八千七百三十六
- Chinese (financial)
- 壹拾參萬捌仟柒佰參拾陸
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138736, here are decompositions:
- 5 + 138731 = 138736
- 53 + 138683 = 138736
- 89 + 138647 = 138736
- 107 + 138629 = 138736
- 137 + 138599 = 138736
- 149 + 138587 = 138736
- 167 + 138569 = 138736
- 173 + 138563 = 138736
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B7 B0 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.29.240.
- Address
- 0.2.29.240
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.29.240
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 138,736 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.