21830985
21,830,985 is an odd composite number composed of five prime numbers multiplied together.
21830985 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 21830985:
33 × 5 × 11 × 61 × 241
(3 × 3 × 3 × 5 × 11 × 61 × 241)See below for interesting mathematical facts about the number 21830985 from the Numbermatics database.
Names of 21830985
- Cardinal: 21830985 can be written as Twenty-one million, eight hundred thirty thousand, nine hundred eighty-five.
Scientific notation
- Scientific notation: 2.1830985 × 107
Factors of 21830985
Divisors of 21830985
- Number of divisors d(n): 64
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Complete list of divisors:
1 3 5 9 11 15 27 33 45 55 61 99 135 165 183 241 297 305 495 549 671 723 915 1205 1485 1647 2013 2169 2651 2745 3355 3615 6039 6507 7953 8235 10065 10845 13255 14701 18117 23859 30195 32535 39765 44103 71577 73505 90585 119295 132309 161711 220515 357885 396927 485133 661545 808555 1455399 1984635 2425665 4366197 7276995 21830985
- Sum of all divisors σ(n): 43211520
- Sum of proper divisors (its aliquot sum) s(n): 21380535
- 21830985 is a deficient number, because the sum of its proper divisors (21380535) is less than itself. Its deficiency is 450450
Bases of 21830985
- Binary: 10100110100011101010010012
- Hexadecimal: 0x14D1D49
- Base-36: CZWW9
Squares and roots of 21830985
- 21830985 squared (218309852) is 476591906070225
- 21830985 cubed (218309853) is 10404470752540490921625
-
The
square root of 21830985 is 4672.3639627067 -
The
cube root of 21830985 is 279.4845320703
Scales and comparisons
How big is 21830985?- 21,830,985 seconds is equal to 36 weeks, 16 hours, 9 minutes, 45 seconds.
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To count from 1 to 21,830,985 would take you about two weeks!
This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
- A cube with a volume of 21830985 cubic inches would be around 23.3 feet tall.
Recreational maths with 21830985
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The information we have on file for 21830985 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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