990,432
990,432 is a composite number, even.
990,432 (nine hundred ninety thousand four hundred thirty-two) is an even 6-digit number. It is a composite number with 72 divisors, and factors as 2⁵ × 3² × 19 × 181. Its proper divisors sum to 1,990,728, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF1CE0.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 27
- Digit product
- 0
- Digital root
- 9
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 234,099
- Square (n²)
- 980,955,546,624
- Cube (n³)
- 971,569,763,953,901,568
- Divisor count
- 72
- σ(n) — sum of divisors
- 2,981,160
- φ(n) — Euler's totient
- 311,040
- Sum of prime factors
- 216
Primality
Prime factorization: 2 5 × 3 2 × 19 × 181
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√990,432 = [995; (4, 1, 8, 11, 1, 1, 1, 39, 1, 26, 3, 2, 3, 1, 6, 6, 4, 1, 2, 1, 2, 16, 11, 1, …)]
Period length 52 — the block in parentheses repeats forever.
Representations
- In words
- nine hundred ninety thousand four hundred thirty-two
- Ordinal
- 990432nd
- Binary
- 11110001110011100000
- Octal
- 3616340
- Hexadecimal
- 0xF1CE0
- Base64
- Dxzg
- One's complement
- 4,293,976,863 (32-bit)
- Scientific notation
- 9.90432 × 10⁵
- As a duration
- 990,432 s = 11 days, 11 hours, 7 minutes, 12 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ϡϟυλβʹ
- Chinese
- 九十九萬零四百三十二
- Chinese (financial)
- 玖拾玖萬零肆佰參拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 990432, here are decompositions:
- 43 + 990389 = 990432
- 61 + 990371 = 990432
- 71 + 990361 = 990432
- 73 + 990359 = 990432
- 83 + 990349 = 990432
- 101 + 990331 = 990432
- 103 + 990329 = 990432
- 109 + 990323 = 990432
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.28.224.
- Address
- 0.15.28.224
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.28.224
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 990,432 and was likely granted around 1911.
Patent numbers below 100,000 are excluded as too ambiguous; modern numbering currently reaches roughly 12.5 million.
The digit sequence 990432 first appears in π at position 138,745 of the decimal expansion (the 138,745ordinal-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°.