165,672
165,672 is a composite number, even.
165,672 (one hundred sixty-five thousand six hundred seventy-two) is an even 6-digit number. It is a composite number with 64 divisors, and factors as 2³ × 3³ × 13 × 59. Its proper divisors sum to 338,328, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x28728.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 27
- Digit product
- 2,520
- Digital root
- 9
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 276,561
- Square (n²)
- 27,447,211,584
- Cube (n³)
- 4,547,234,437,544,448
- Divisor count
- 64
- σ(n) — sum of divisors
- 504,000
- φ(n) — Euler's totient
- 50,112
- Sum of prime factors
- 87
Primality
Prime factorization: 2 3 × 3 3 × 13 × 59
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√165,672 = [407; (35, 2, 1, 1, 4, 1, 3, 8, 1, 89, 1, 1, 3, 1, 3, 6, 2, 6, 3, 1, 3, 1, 1, 89, …)]
Period length 34 — the block in parentheses repeats forever.
Representations
- In words
- one hundred sixty-five thousand six hundred seventy-two
- Ordinal
- 165672nd
- Binary
- 101000011100101000
- Octal
- 503450
- Hexadecimal
- 0x28728
- Base64
- Aoco
- One's complement
- 4,294,801,623 (32-bit)
- Scientific notation
- 1.65672 × 10⁵
- As a duration
- 165,672 s = 1 day, 22 hours, 1 minute, 12 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹 𒁹 𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ρξεχοβʹ
- Chinese
- 一十六萬五千六百七十二
- Chinese (financial)
- 壹拾陸萬伍仟陸佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 165672, here are decompositions:
- 5 + 165667 = 165672
- 19 + 165653 = 165672
- 61 + 165611 = 165672
- 71 + 165601 = 165672
- 83 + 165589 = 165672
- 103 + 165569 = 165672
- 113 + 165559 = 165672
- 131 + 165541 = 165672
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A8 9C A8 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.135.40.
- Address
- 0.2.135.40
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.135.40
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 165,672 and was likely granted around 1874.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 165672 first appears in π at position 67,700 of the decimal expansion (the 67,700ordinal-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°.