138,536
138,536 is a composite number, even.
138,536 (one hundred thirty-eight thousand five hundred thirty-six) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2³ × 17,317. Written other ways, in hexadecimal, 0x21D28.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 2,160
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 635,831
- Recamán's sequence
- a(491,755) = 138,536
- Square (n²)
- 19,192,223,296
- Cube (n³)
- 2,658,813,846,534,656
- Divisor count
- 8
- σ(n) — sum of divisors
- 259,770
- φ(n) — Euler's totient
- 69,264
- Sum of prime factors
- 17,323
Primality
Prime factorization: 2 3 × 17317
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,536 = [372; (4, 1, 8, 1, 1, 1, 1, 1, 6, 1, 1, 1, 1, 9, 1, 1, 2, 4, 1, 1, 185, 1, 1, 4, …)]
Period length 42 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand five hundred thirty-six
- Ordinal
- 138536th
- Binary
- 100001110100101000
- Octal
- 416450
- Hexadecimal
- 0x21D28
- Base64
- Ah0o
- One's complement
- 4,294,828,759 (32-bit)
- Scientific notation
- 1.38536 × 10⁵
- As a duration
- 138,536 s = 1 day, 14 hours, 28 minutes, 56 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληφλϛʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋦·𝋰
- Chinese
- 一十三萬八千五百三十六
- Chinese (financial)
- 壹拾參萬捌仟伍佰參拾陸
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138536, here are decompositions:
- 19 + 138517 = 138536
- 43 + 138493 = 138536
- 67 + 138469 = 138536
- 103 + 138433 = 138536
- 109 + 138427 = 138536
- 163 + 138373 = 138536
- 199 + 138337 = 138536
- 373 + 138163 = 138536
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B4 A8 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.29.40.
- Address
- 0.2.29.40
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.29.40
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 138,536 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 138536 first appears in π at position 138,725 of the decimal expansion (the 138,725ordinal-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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.