165,490
165,490 is a composite number, even.
165,490 (one hundred sixty-five thousand four hundred ninety) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2 × 5 × 13 × 19 × 67. Its proper divisors sum to 177,230, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0x28672.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 25
- Digit product
- 0
- Digital root
- 7
- Palindrome
- No
- Bit width
- 18 bits
- Reversed
- 94,561
- Recamán's sequence
- a(52,652) = 165,490
- Square (n²)
- 27,386,940,100
- Cube (n³)
- 4,532,264,717,149,000
- Divisor count
- 32
- σ(n) — sum of divisors
- 342,720
- φ(n) — Euler's totient
- 57,024
- Sum of prime factors
- 106
Primality
Prime factorization: 2 × 5 × 13 × 19 × 67
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√165,490 = [406; (1, 4, 8, 2, 5, 9, 1, 6, 4, 3, 1, 20, 10, 3, 1, 89, 1, 1, 1, 4, 2, 4, 1, 1, …)]
Period length 42 — the block in parentheses repeats forever.
Representations
- In words
- one hundred sixty-five thousand four hundred ninety
- Ordinal
- 165490th
- Binary
- 101000011001110010
- Octal
- 503162
- Hexadecimal
- 0x28672
- Base64
- AoZy
- One's complement
- 4,294,801,805 (32-bit)
- Scientific notation
- 1.6549 × 10⁵
- As a duration
- 165,490 s = 1 day, 21 hours, 58 minutes, 10 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋
- Egyptian hieroglyphic
- 𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓆼𓆼𓆼𓆼𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Greek (Milesian)
- ͵ρξευϟʹ
- Chinese
- 一十六萬五千四百九十
- Chinese (financial)
- 壹拾陸萬伍仟肆佰玖拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 165490, here are decompositions:
- 11 + 165479 = 165490
- 41 + 165449 = 165490
- 47 + 165443 = 165490
- 53 + 165437 = 165490
- 107 + 165383 = 165490
- 173 + 165317 = 165490
- 179 + 165311 = 165490
- 197 + 165293 = 165490
Showing the first eight; more decompositions exist.
UTF-8 encoding: F0 A8 99 B2 (4 bytes).
As an unsigned 32-bit integer, this is the IPv4 address 0.2.134.114.
- Address
- 0.2.134.114
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.2.134.114
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 165,490 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 165490 first appears in π at position 636,129 of the decimal expansion (the 636,129ordinal-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°.