138,066
138,066 is a composite number, even.
138,066 (one hundred thirty-eight thousand sixty-six) is an even 6-digit number. It is a composite number with 8 divisors, and factors as 2 × 3 × 23,011. Its proper divisors sum to 138,078, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x21B52.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 24
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 660,831
- Recamán's sequence
- a(492,695) = 138,066
- Square (n²)
- 19,062,220,356
- Cube (n³)
- 2,631,844,515,671,496
- Divisor count
- 8
- σ(n) — sum of divisors
- 276,144
- φ(n) — Euler's totient
- 46,020
- Sum of prime factors
- 23,016
Primality
Prime factorization: 2 × 3 × 23011
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√138,066 = [371; (1, 1, 2, 1, 21, 1, 4, 7, 2, 5, 1, 2, 14, 1, 1, 21, 2, 1, 15, 7, 6, 1, 1, 1, …)]
Representations
- In words
- one hundred thirty-eight thousand sixty-six
- Ordinal
- 138066th
- Binary
- 100001101101010010
- Octal
- 415522
- Hexadecimal
- 0x21B52
- Base64
- AhtS
- One's complement
- 4,294,829,229 (32-bit)
- Scientific notation
- 1.38066 × 10⁵
- As a duration
- 138,066 s = 1 day, 14 hours, 21 minutes, 6 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹 𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓆼𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ρληξϛʹ
- Mayan (base 20)
- 𝋱·𝋥·𝋣·𝋦
- Chinese
- 一十三萬八千零六十六
- Chinese (financial)
- 壹拾參萬捌仟零陸拾陸
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 138066, here are decompositions:
- 7 + 138059 = 138066
- 13 + 138053 = 138066
- 59 + 138007 = 138066
- 67 + 137999 = 138066
- 73 + 137993 = 138066
- 83 + 137983 = 138066
- 109 + 137957 = 138066
- 139 + 137927 = 138066
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A1 AD 92 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.27.82.
- Address
- 0.2.27.82
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.27.82
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 138,066 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 138066 first appears in π at position 506,853 of the decimal expansion (the 506,853ordinal-suffix:rd 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°.