21305200
21,305,200 is an even composite number composed of four prime numbers multiplied together.
21305200 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety divisors.
Prime factorization of 21305200:
24 × 52 × 72 × 1087
(2 × 2 × 2 × 2 × 5 × 5 × 7 × 7 × 1087)See below for interesting mathematical facts about the number 21305200 from the Numbermatics database.
Names of 21305200
- Cardinal: 21305200 can be written as Twenty-one million, three hundred five thousand, two hundred.
Scientific notation
- Scientific notation: 2.13052 × 107
Factors of 21305200
Divisors of 21305200
- Number of divisors d(n): 90
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Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 25 28 35 40 49 50 56 70 80 98 100 112 140 175 196 200 245 280 350 392 400 490 560 700 784 980 1087 1225 1400 1960 2174 2450 2800 3920 4348 4900 5435 7609 8696 9800 10870 15218 17392 19600 21740 27175 30436 38045 43480 53263 54350 60872 76090 86960 106526 108700 121744 152180 190225 213052 217400 266315 304360 380450 426104 434800 532630 608720 760900 852208 1065260 1331575 1521800 2130520 2663150 3043600 4261040 5326300 10652600 21305200
- Sum of all divisors σ(n): 59597376
- Sum of proper divisors (its aliquot sum) s(n): 38292176
- 21305200 is an abundant number, because the sum of its proper divisors (38292176) is greater than itself. Its abundance is 16986976
Bases of 21305200
- Binary: 10100010100010111011100002
- Hexadecimal: 0x1451770
- Base-36: CON74
Squares and roots of 21305200
- 21305200 squared (213052002) is 453911547040000
- 21305200 cubed (213052003) is 9670676291996608000000
-
The
square root of 21305200 is 4615.7556261137 -
The
cube root of 21305200 is 277.2225400847
Scales and comparisons
How big is 21305200?- 21,305,200 seconds is equal to 35 weeks, 1 day, 14 hours, 6 minutes, 40 seconds.
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To count from 1 to 21,305,200 would take you about five 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 21305200 cubic inches would be around 23.1 feet tall.
Recreational maths with 21305200
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The information we have on file for 21305200 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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