21520890
21,520,890 is an even composite number composed of four prime numbers multiplied together.
21520890 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of sixty divisors.
Prime factorization of 21520890:
2 × 34 × 5 × 1632
(2 × 3 × 3 × 3 × 3 × 5 × 163 × 163)See below for interesting mathematical facts about the number 21520890 from the Numbermatics database.
Names of 21520890
- Cardinal: 21520890 can be written as Twenty-one million, five hundred twenty thousand, eight hundred ninety.
Scientific notation
- Scientific notation: 2.152089 × 107
Factors of 21520890
Divisors of 21520890
- Number of divisors d(n): 60
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Complete list of divisors:
1 2 3 5 6 9 10 15 18 27 30 45 54 81 90 135 162 163 270 326 405 489 810 815 978 1467 1630 2445 2934 4401 4890 7335 8802 13203 14670 22005 26406 26569 44010 53138 66015 79707 132030 132845 159414 239121 265690 398535 478242 717363 797070 1195605 1434726 2152089 2391210 3586815 4304178 7173630 10760445 21520890
- Sum of all divisors σ(n): 58224474
- Sum of proper divisors (its aliquot sum) s(n): 36703584
- 21520890 is an abundant number, because the sum of its proper divisors (36703584) is greater than itself. Its abundance is 15182694
Bases of 21520890
- Binary: 10100100001100001111110102
- Hexadecimal: 0x14861FA
- Base-36: CT9MI
Squares and roots of 21520890
- 21520890 squared (215208902) is 463148706392100
- 21520890 cubed (215208903) is 9967372363906680969000
-
The
square root of 21520890 is 4639.0613274671 -
The
cube root of 21520890 is 278.1549177091
Scales and comparisons
How big is 21520890?- 21,520,890 seconds is equal to 35 weeks, 4 days, 2 hours, 1 minute, 30 seconds.
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To count from 1 to 21,520,890 would take you about two days!
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 21520890 cubic inches would be around 23.2 feet tall.
Recreational maths with 21520890
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The information we have on file for 21520890 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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