138,522
138,522 is a composite number, even.
138,522 (one hundred thirty-eight thousand five hundred twenty-two) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 3 × 23,087. Its proper divisors sum to 138,534, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21D1A.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 21
- Digit product
- 480
- Digital root
- 3
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 225,831
- Recamán's sequence
- a(491,783) = 138,522
- Square (n²)
- 19,188,344,484
- Cube (n³)
- 2,658,007,854,612,648
- Divisor count
- 8
- σ(n) — sum of divisors
- 277,056
- φ(n) — Euler's totient
- 46,172
- Sum of prime factors
- 23,092
Primality
Prime factorization: 2 × 3 × 23087
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,522 = [372; (5, 2, 1, 1, 4, 1, 5, 3, 1, 1, 3, 7, 2, 1, 1, 5, 1, 2, 2, 23, 1, 1, 2, 2, …)]
Representations
- In words
- one hundred thirty-eight thousand five hundred twenty-two
- Ordinal
- 138522nd
- Binary
- 100001110100011010
- Octal
- 416432
- Hexadecimal
- 0x21D1A
- Base64
- Ah0a
- One's complement
- 4,294,828,773 (32-bit)
- Scientific notation
- 1.38522 × 10⁵
- As a duration
- 138,522 s = 1 day, 14 hours, 28 minutes, 42 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρληφκβʹ
- Mayan (base 20)
- 𝋱·𝋦·𝋦·𝋢
- Chinese
- 一十三萬八千五百二十二
- Chinese (financial)
- 壹拾參萬捌仟伍佰貳拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138522, here are decompositions:
- 5 + 138517 = 138522
- 11 + 138511 = 138522
- 29 + 138493 = 138522
- 53 + 138469 = 138522
- 61 + 138461 = 138522
- 71 + 138451 = 138522
- 73 + 138449 = 138522
- 89 + 138433 = 138522
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 B4 9A (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.29.26.
- Address
- 0.2.29.26
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.29.26
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 138,522 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 138522 first appears in π at position 2,428 of the decimal expansion (the 2,428ordinal-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
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.