221091728
221,091,728 is an even composite number composed of five prime numbers multiplied together.
221091728 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of eighty divisors.
Prime factorization of 221091728:
24 × 11 × 13 × 71 × 1361
(2 × 2 × 2 × 2 × 11 × 13 × 71 × 1361)See below for interesting mathematical facts about the number 221091728 from the Numbermatics database.
Names of 221091728
- Cardinal: 221091728 can be written as Two hundred twenty-one million, ninety-one thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.21091728 × 108
Factors of 221091728
Divisors of 221091728
- Number of divisors d(n): 80
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Complete list of divisors:
1 2 4 8 11 13 16 22 26 44 52 71 88 104 142 143 176 208 284 286 568 572 781 923 1136 1144 1361 1562 1846 2288 2722 3124 3692 5444 6248 7384 10153 10888 12496 14768 14971 17693 20306 21776 29942 35386 40612 59884 70772 81224 96631 119768 141544 162448 193262 194623 239536 283088 386524 389246 773048 778492 1062941 1256203 1546096 1556984 2125882 2512406 3113968 4251764 5024812 8503528 10049624 13818233 17007056 20099248 27636466 55272932 110545864 221091728
- Sum of all divisors σ(n): 510717312
- Sum of proper divisors (its aliquot sum) s(n): 289625584
- 221091728 is an abundant number, because the sum of its proper divisors (289625584) is greater than itself. Its abundance is 68533856
Bases of 221091728
- Binary: 11010010110110010111100100002
- Hexadecimal: 0xD2D9790
- Base-36: 3NMRGW
Squares and roots of 221091728
- 221091728 squared (2210917282) is 48881552190025984
- 221091728 cubed (2210917283) is 10807306841015029167460352
-
The
square root of 221091728 is 14869.1535737579 -
The
cube root of 221091728 is 604.6779954389
Scales and comparisons
How big is 221091728?- 221,091,728 seconds is equal to 7 years, 1 week, 3 days, 22 hours, 22 minutes, 8 seconds.
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To count from 1 to 221,091,728 would take you about ten years!
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 221091728 cubic inches would be around 50.4 feet tall.
Recreational maths with 221091728
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The information we have on file for 221091728 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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