138,590
138,590 is a composite number, even.
138,590 (one hundred thirty-eight thousand five hundred ninety) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 5 × 13,859. Written other ways, in hexadecimal, 0x21D5E.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 26
- Digit product
- 0
- Digital root
- 8
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 95,831
- Recamán's sequence
- a(491,647) = 138,590
- Square (n²)
- 19,207,188,100
- Cube (n³)
- 2,661,924,198,779,000
- Divisor count
- 8
- σ(n) — sum of divisors
- 249,480
- φ(n) — Euler's totient
- 55,432
- Sum of prime factors
- 13,866
Primality
Prime factorization: 2 × 5 × 13859
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,590 = [372; (3, 1, 1, 1, 1, 2, 2, 11, 28, 1, 1, 4, 1, 1, 2, 4, 74, 4, 2, 1, 1, 4, 1, 1, …)]
Period length 34 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand five hundred ninety
- Ordinal
- 138590th
- Binary
- 100001110101011110
- Octal
- 416536
- Hexadecimal
- 0x21D5E
- Base64
- Ah1e
- One's complement
- 4,294,828,705 (32-bit)
- Scientific notation
- 1.3859 × 10⁵
- As a duration
- 138,590 s = 1 day, 14 hours, 29 minutes, 50 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρληφϟʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋩·𝋪
- Chinese
- 一十三萬八千五百九十
- Chinese (financial)
- 壹拾參萬捌仟伍佰玖拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138590, here are decompositions:
- 3 + 138587 = 138590
- 13 + 138577 = 138590
- 19 + 138571 = 138590
- 31 + 138559 = 138590
- 43 + 138547 = 138590
- 73 + 138517 = 138590
- 79 + 138511 = 138590
- 97 + 138493 = 138590
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B5 9E (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.29.94.
- Address
- 0.2.29.94
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.29.94
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 138,590 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
- Mayan numerals — Vigesimal dots-and-bars with a shell zero — one of the earliest true zeros.