138,460
138,460 is a composite number, even.
138,460 (one hundred thirty-eight thousand four hundred sixty) is an even 6-digit number. It is a composite number with 48 divisors, and factors as 2² × 5 × 7 × 23 × 43. Its proper divisors sum to 216,356, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21CDC.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 22
- Digit product
- 0
- Digital root
- 4
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 64,831
- Recamán's sequence
- a(491,907) = 138,460
- Square (n²)
- 19,171,171,600
- Cube (n³)
- 2,654,440,419,736,000
- Divisor count
- 48
- σ(n) — sum of divisors
- 354,816
- φ(n) — Euler's totient
- 44,352
- Sum of prime factors
- 82
Primality
Prime factorization: 2 2 × 5 × 7 × 23 × 43
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,460 = [372; (9, 1, 3, 1, 3, 1, 1, 3, 1, 19, 1, 8, 4, 4, 6, 4, 4, 8, 1, 19, 1, 3, 1, 1, …)]
Period length 30 — the block in parentheses repeats forever.
Representations
- In words
- one hundred thirty-eight thousand four hundred sixty
- Ordinal
- 138460th
- Binary
- 100001110011011100
- Octal
- 416334
- Hexadecimal
- 0x21CDC
- Base64
- Ahzc
- One's complement
- 4,294,828,835 (32-bit)
- Scientific notation
- 1.3846 × 10⁵
- As a duration
- 138,460 s = 1 day, 14 hours, 27 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρληυξʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋣·𝋠
- Chinese
- 一十三萬八千四百六十
- Chinese (financial)
- 壹拾參萬捌仟肆佰陸拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138460, here are decompositions:
- 11 + 138449 = 138460
- 53 + 138407 = 138460
- 59 + 138401 = 138460
- 71 + 138389 = 138460
- 89 + 138371 = 138460
- 137 + 138323 = 138460
- 149 + 138311 = 138460
- 251 + 138209 = 138460
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B3 9C (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.28.220.
- Address
- 0.2.28.220
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.28.220
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 138,460 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.