1,011,990
1,011,990 is a composite number, even.
1,011,990 (one million eleven thousand nine hundred ninety) is an even 7-digit number. It is a composite number with 64 divisors, and factors as 2 × 3 × 5 × 7 × 61 × 79. Its proper divisors sum to 1,844,970, more than the number itself, making it an abundant number. Written other ways, in hexadecimal, 0xF7116.
Interestingness
Properties
- Parity
- Even
- Digit count
- 7
- Digit sum
- 21
- Digit product
- 0
- Digital root
- 3
- Palindrome
- No
- Bit width
- 20 bits
- Reversed
- 991,101
- Flips to (rotate 180°)
- 661,101
- Square (n²)
- 1,024,123,760,100
- Cube (n³)
- 1,036,403,003,983,599,000
- Divisor count
- 64
- σ(n) — sum of divisors
- 2,856,960
- φ(n) — Euler's totient
- 224,640
- Sum of prime factors
- 157
Primality
Prime factorization: 2 × 3 × 5 × 7 × 61 × 79
Divisors & multiples
Sums & aliquot sequence
Continued fraction of √n
√1,011,990 = [1005; (1, 42, 1, 2, 1, 4, 1, 2, 1, 42, 1, 2010)]
Period length 12 — the block in parentheses repeats forever.
Representations
- In words
- one million eleven thousand nine hundred ninety
- Ordinal
- 1011990th
- Binary
- 11110111000100010110
- Octal
- 3670426
- Hexadecimal
- 0xF7116
- Base64
- D3EW
- One's complement
- 4,293,955,305 (32-bit)
- Scientific notation
- 1.01199 × 10⁶
- As a duration
- 1,011,990 s = 11 days, 17 hours, 6 minutes, 30 seconds
As an angle
Historical numeral systems
- Babylonian (base 60)
- 𒁹𒁹𒁹𒁹 𒌋𒌋𒌋𒌋𒁹 𒁹𒁹𒁹𒁹𒁹𒁹 𒌋𒌋𒌋
- Egyptian hieroglyphic
- 𓁨𓂍𓆼𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓍢𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆𓎆
- Chinese
- 一百零一萬一千九百九十
- Chinese (financial)
- 壹佰零壹萬壹仟玖佰玖拾
Also seen as
Goldbach's conjecture says every even integer greater than 2 is the sum of two primes. For 1011990, here are decompositions:
- 11 + 1011979 = 1011990
- 17 + 1011973 = 1011990
- 29 + 1011961 = 1011990
- 43 + 1011947 = 1011990
- 47 + 1011943 = 1011990
- 53 + 1011937 = 1011990
- 73 + 1011917 = 1011990
- 97 + 1011893 = 1011990
Showing the first eight; more decompositions exist.
As an unsigned 32-bit integer, this is the IPv4 address 0.15.113.22.
- Address
- 0.15.113.22
- Class
- reserved
- IPv4-mapped IPv6
- ::ffff:0.15.113.22
Unspecified address (0.0.0.0/8) — "this network" placeholder.
Could be parsed as a date. Most likely interpretation: Monday, January 1, 1990 (MDDYYYY (US, single-digit month)).
Other possible interpretations (2)
- 1990-10-01 (MMDYYYY (US, single-digit day))
- 1990-01-10 (DDMYYYY (Euro, single-digit month))
This number falls in the range of US utility patent numbers. If it's a patent, it would be issued as US 1,011,990 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 1011990 first appears in π at position 354,203 of the decimal expansion (the 354,203ordinal-suffix:rd 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°.