990,528
990,528 is a composite number, even.
990,528 (nine hundred ninety thousand five hundred twenty-eight) is an even 6-digit number. It is a composite number with 112 divisors, and factors as 2⁶ × 3 × 7 × 11 × 67. Its proper divisors sum to 2,325,696, more than the number itself, making it an abundant number. It is the 1,407th triangular number. Written other ways, in hexadecimal, 0xF1D40.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 33
- Digit product
- 0
- Digital root
- 6
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 825,099
- Square (n²)
- 981,145,718,784
- Cube (n³)
- 971,852,306,535,677,952
- Divisor count
- 112
- σ(n) — sum of divisors
- 3,316,224
- φ(n) — Euler's totient
- 253,440
- Sum of prime factors
- 100
Primality
Prime factorization: 2 6 × 3 × 7 × 11 × 67
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√990,528 = [995; (3, 1, 22, 7, 1, 2, 1, 2, 1, 1, 1, 1, 1, 2, 1, 2, 1, 7, 22, 1, 3, 1990)]
Period length 22 — the block in parentheses repeats forever.
Representations
- In words
- nine hundred ninety thousand five hundred twenty-eight
- Ordinal
- 990528th
- Binary
- 11110001110101000000
- Octal
- 3616500
- Hexadecimal
- 0xF1D40
- Base64
- Dx1A
- One's complement
- 4,293,976,767 (32-bit)
- Scientific notation
- 9.90528 × 10⁵
- As a duration
- 990,528 s = 11 days, 11 hours, 8 minutes, 48 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓏺𓏺𓏺𓏺𓏺𓏺𓏺𓏺
- Greek (Milesian)
- ͵ϡϟφκηʹ
- Chinese
- 九十九萬零五百二十八
- Chinese (financial)
- 玖拾玖萬零伍佰貳拾捌
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 990528, here are decompositions:
- 5 + 990523 = 990528
- 17 + 990511 = 990528
- 31 + 990497 = 990528
- 41 + 990487 = 990528
- 59 + 990469 = 990528
- 131 + 990397 = 990528
- 139 + 990389 = 990528
- 151 + 990377 = 990528
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.29.64.
- Address
- 0.15.29.64
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.29.64
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 990,528 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 990528 first appears in π at position 864,554 of the decimal expansion (the 864,554ordinal-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
- Triangular numbers — 1, 3, 6, 10, 15 … the counting numbers stacked into triangles, and Gauss's famous shortcut for summing them.
- Babylonian numerals — The base-60 cuneiform system that gave us 60 minutes, 60 seconds, and 360°.