972,138
972,138 is a composite number, even.
972,138 (nine hundred seventy-two thousand one hundred thirty-eight) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2 × 3 × 29 × 37 × 151. Its proper divisors sum to 1,107,222, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xED56A.
Interestingness
Properties
Primality
Prime factorization: 2 × 3 × 29 × 37 × 151
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√972,138 = [985; (1, 32, 1, 1970)]
Period length 4 — the block in parentheses repeats forever.
Representations
- In words
- nine hundred seventy-two thousand one hundred thirty-eight
- Ordinal
- 972138th
- Binary
- 11101101010101101010
- Octal
- 3552552
- Hexadecimal
- 0xED56A
- Base64
- DtVq
- One's complement
- 4,293,995,157 (32-bit)
- Scientific notation
- 9.72138 × 10⁵
- As a duration
- 972,138 s = 11 days, 6 hours, 2 minutes, 18 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋 𒁹𒁹 𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓍢𓎆𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ϡοβρληʹ
- Chinese
- 九十七萬二千一百三十八
- Chinese (financial)
- 玖拾柒萬貳仟壹佰參拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 972138, here are decompositions:
- 5 + 972133 = 972138
- 7 + 972131 = 972138
- 17 + 972121 = 972138
- 19 + 972119 = 972138
- 47 + 972091 = 972138
- 59 + 972079 = 972138
- 67 + 972071 = 972138
- 107 + 972031 = 972138
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.14.213.106.
- Address
- 0.14.213.106
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.14.213.106
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 972,138 and was likely granted around 1910.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 972138 first appears in π at position 135,578 of the decimal expansion (the 135,578ordinal-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°.