21085100
21,085,100 is an even composite number composed of five prime numbers multiplied together.
21085100 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 21085100:
22 × 52 × 17 × 79 × 157
(2 × 2 × 5 × 5 × 17 × 79 × 157)See below for interesting mathematical facts about the number 21085100 from the Numbermatics database.
Names of 21085100
- Cardinal: 21085100 can be written as Twenty-one million, eighty-five thousand, one hundred.
Scientific notation
- Scientific notation: 2.10851 × 107
Factors of 21085100
Divisors of 21085100
- Number of divisors d(n): 72
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Complete list of divisors:
1 2 4 5 10 17 20 25 34 50 68 79 85 100 157 158 170 314 316 340 395 425 628 785 790 850 1343 1570 1580 1700 1975 2669 2686 3140 3925 3950 5338 5372 6715 7850 7900 10676 12403 13345 13430 15700 24806 26690 26860 33575 49612 53380 62015 66725 67150 124030 133450 134300 210851 248060 266900 310075 421702 620150 843404 1054255 1240300 2108510 4217020 5271275 10542550 21085100
- Sum of all divisors σ(n): 49371840
- Sum of proper divisors (its aliquot sum) s(n): 28286740
- 21085100 is an abundant number, because the sum of its proper divisors (28286740) is greater than itself. Its abundance is 7201640
Bases of 21085100
- Binary: 10100000110111011101011002
- Hexadecimal: 0x141BBAC
- Base-36: CJXD8
Squares and roots of 21085100
- 21085100 squared (210851002) is 444581442010000
- 21085100 cubed (210851003) is 9374044162925051000000
-
The
square root of 21085100 is 4591.8514784343 -
The
cube root of 21085100 is 276.2645890891
Scales and comparisons
How big is 21085100?- 21,085,100 seconds is equal to 34 weeks, 6 days, 58 minutes, 20 seconds.
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To count from 1 to 21,085,100 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 21085100 cubic inches would be around 23 feet tall.
Recreational maths with 21085100
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The information we have on file for 21085100 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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