138,664
138,664 is a composite number, even.
138,664 (one hundred thirty-eight thousand six hundred sixty-four) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2³ × 17,333. Written other ways, in hexadecimal, 0x21DA8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 28
- Digit product
- 3,456
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 466,831
- Recamán's sequence
- a(491,499) = 138,664
- Square (n²)
- 19,227,704,896
- Cube (n³)
- 2,666,190,471,698,944
- Divisor count
- 8
- σ(n) — sum of divisors
- 260,010
- φ(n) — Euler's totient
- 69,328
- Sum of prime factors
- 17,339
Primality
Prime factorization: 2 3 × 17333
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,664 = [372; (2, 1, 1, 1, 12, 1, 10, 1, 8, 1, 1, 22, 23, 1, 48, 1, 2, 4, 10, 3, 1, 6, 2, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand six hundred sixty-four
- Ordinal
- 138664th
- Binary
- 100001110110101000
- Octal
- 416650
- Hexadecimal
- 0x21DA8
- Base64
- Ah2o
- One's complement
- 4,294,828,631 (32-bit)
- Scientific notation
- 1.38664 × 10⁵
- As a duration
- 138,664 s = 1 day, 14 hours, 31 minutes, 4 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹 𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληχξδʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋭·𝋤
- Chinese
- 一十三萬八千六百六十四
- Chinese (financial)
- 壹拾參萬捌仟陸佰陸拾肆
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138664, here are decompositions:
- 3 + 138661 = 138664
- 17 + 138647 = 138664
- 23 + 138641 = 138664
- 47 + 138617 = 138664
- 83 + 138581 = 138664
- 101 + 138563 = 138664
- 167 + 138497 = 138664
- 257 + 138407 = 138664
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B6 A8 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.29.168.
- Address
- 0.2.29.168
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.29.168
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 138,664 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.