138,340
138,340 is a composite number, even.
138,340 (one hundred thirty-eight thousand three hundred forty) is an even 6-digit number. It is a composite number with 12 divisors, and factors as 2² × 5 × 6,917. Its proper divisors sum to 152,216, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21C64.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 19
- Digit product
- 0
- Digital root
- 1
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 43,831
- Recamán's sequence
- a(492,147) = 138,340
- Square (n²)
- 19,137,955,600
- Cube (n³)
- 2,647,544,777,704,000
- Divisor count
- 12
- σ(n) — sum of divisors
- 290,556
- φ(n) — Euler's totient
- 55,328
- Sum of prime factors
- 6,926
Primality
Prime factorization: 2 2 × 5 × 6917
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,340 = [371; (1, 15, 1, 9, 1, 5, 4, 5, 1, 1, 8, 1, 6, 1, 5, 1, 4, 1, 4, 1, 2, 7, 2, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand three hundred forty
- Ordinal
- 138340th
- Binary
- 100001110001100100
- Octal
- 416144
- Hexadecimal
- 0x21C64
- Base64
- Ahxk
- One's complement
- 4,294,828,955 (32-bit)
- Scientific notation
- 1.3834 × 10⁵
- As a duration
- 138,340 s = 1 day, 14 hours, 25 minutes, 40 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρλητμʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋱·𝋠
- Chinese
- 一十三萬八千三百四十
- Chinese (financial)
- 壹拾參萬捌仟參佰肆拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138340, here are decompositions:
- 3 + 138337 = 138340
- 17 + 138323 = 138340
- 29 + 138311 = 138340
- 89 + 138251 = 138340
- 101 + 138239 = 138340
- 131 + 138209 = 138340
- 149 + 138191 = 138340
- 197 + 138143 = 138340
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B1 A4 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.28.100.
- Address
- 0.2.28.100
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.28.100
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 138,340 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 138340 first appears in π at position 182,562 of the decimal expansion (the 182,562ordinal-suffix:nd 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
- Egyptian hieroglyphic numerals — Seven hieroglyphs for every power of ten, from a single stroke to a million.