991,672
991,672 is a composite number, even.
991,672 (nine hundred ninety-one thousand six hundred seventy-two) is an even 6-digit number. It is a composite number with 32 divisors, and factors as 2³ × 11 × 59 × 191. Its proper divisors sum to 1,081,928, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF21B8.
Interestingness
Properties
- Parity
- Even
- Digit count
- 6
- Digit sum
- 34
- Digit product
- 6,804
- Digital root
- 7
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 276,199
- Square (n²)
- 983,413,355,584
- Cube (n³)
- 975,223,489,158,696,448
- Divisor count
- 32
- σ(n) — sum of divisors
- 2,073,600
- φ(n) — Euler's totient
- 440,800
- Sum of prime factors
- 267
Primality
Prime factorization: 2 3 × 11 × 59 × 191
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√991,672 = [995; (1, 4, 1, 3, 1, 3, 3, 1, 1, 2, 1, 7, 1, 2, 1, 1, 3, 3, 1, 3, 1, 4, 1, 1990)]
Period length 24 — the block in parentheses repeats forever.
Representations
- In words
- nine hundred ninety-one thousand six hundred seventy-two
- Ordinal
- 991672nd
- Binary
- 11110010000110111000
- Octal
- 3620670
- Hexadecimal
- 0xF21B8
- Base64
- DyG4
- One's complement
- 4,293,975,623 (32-bit)
- Scientific notation
- 9.91672 × 10⁵
- As a duration
- 991,672 s = 11 days, 11 hours, 27 minutes, 52 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒁹𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒌋𒁹𒁹
- Egyptian hieroglyphic
- 𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓆐𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓏺𓏺
- Greek (Milesian)
- ͵ϡϟαχοβʹ
- Chinese
- 九十九萬一千六百七十二
- Chinese (financial)
- 玖拾玖萬壹仟陸佰柒拾貳
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 991672, here are decompositions:
- 29 + 991643 = 991672
- 53 + 991619 = 991672
- 131 + 991541 = 991672
- 173 + 991499 = 991672
- 179 + 991493 = 991672
- 263 + 991409 = 991672
- 359 + 991313 = 991672
- 443 + 991229 = 991672
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.33.184.
- Address
- 0.15.33.184
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.33.184
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 991,672 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 991672 first appears in π at position 989,247 of the decimal expansion (the 989,247ordinal-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°.