138,726
138,726 is a composite number, even.
138,726 (one hundred thirty-eight thousand seven hundred twenty-six) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2 × 3³ × 7 × 367. Its proper divisors sum to 214,554, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21DE6.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 27
- Digit product
- 2,016
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 627,831
- Recamán's sequence
- a(491,375) = 138,726
- Square (n²)
- 19,244,903,076
- Cube (n³)
- 2,669,768,424,121,176
- Divisor count
- 32
- σ(n) — sum of divisors
- 353,280
- φ(n) — Euler's totient
- 39,528
- Sum of prime factors
- 385
Primality
Prime factorization: 2 × 3 3 × 7 × 367
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,726 = [372; (2, 5, 1, 1, 1, 10, 2, 7, 1, 2, 2, 3, 148, 1, 2, 4, 13, 1, 1, 3, 2, 2, 16, 6, …)]
Representations
- In words
- one hundred thirty-eight thousand seven hundred twenty-six
- Ordinal
- 138726th
- Binary
- 100001110111100110
- Octal
- 416746
- Hexadecimal
- 0x21DE6
- Base64
- Ah3m
- One's complement
- 4,294,828,569 (32-bit)
- Scientific notation
- 1.38726 × 10⁵
- As a duration
- 138,726 s = 1 day, 14 hours, 32 minutes, 6 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληψκϛʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋰·𝋦
- Chinese
- 一十三萬八千七百二十六
- Chinese (financial)
- 壹拾參萬捌仟柒佰貳拾陸
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138726, here are decompositions:
- 43 + 138683 = 138726
- 47 + 138679 = 138726
- 79 + 138647 = 138726
- 89 + 138637 = 138726
- 97 + 138629 = 138726
- 109 + 138617 = 138726
- 127 + 138599 = 138726
- 139 + 138587 = 138726
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B7 A6 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.29.230.
- Address
- 0.2.29.230
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.29.230
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 138,726 and was likely granted around 1872.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 138726 first appears in π at position 815,416 of the decimal expansion (the 815,416ordinal-suffix:th digit after the integer 3).
Search range: the first 1,000,000 fractional digits of π. Any 6-digit-or-shorter string is virtually guaranteed to appear in there — the more interesting signal is the position.
Related reading
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.