21380220
21,380,220 is an even composite number composed of five prime numbers multiplied together.
21380220 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21380220:
22 × 33 × 5 × 172 × 137
(2 × 2 × 3 × 3 × 3 × 5 × 17 × 17 × 137)See below for interesting mathematical facts about the number 21380220 from the Numbermatics database.
Names of 21380220
- Cardinal: 21380220 can be written as Twenty-one million, three hundred eighty thousand, two hundred twenty.
Scientific notation
- Scientific notation: 2.138022 × 107
Factors of 21380220
Divisors of 21380220
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 17 18 20 27 30 34 36 45 51 54 60 68 85 90 102 108 135 137 153 170 180 204 255 270 274 289 306 340 411 459 510 540 548 578 612 685 765 822 867 918 1020 1156 1233 1370 1445 1530 1644 1734 1836 2055 2295 2329 2466 2601 2740 2890 3060 3468 3699 4110 4335 4590 4658 4932 5202 5780 6165 6987 7398 7803 8220 8670 9180 9316 10404 11645 12330 13005 13974 14796 15606 17340 18495 20961 23290 24660 26010 27948 31212 34935 36990 39015 39593 41922 46580 52020 62883 69870 73980 78030 79186 83844 104805 118779 125766 139740 156060 158372 197965 209610 237558 251532 314415 356337 395930 419220 475116 593895 628830 712674 791860 1069011 1187790 1257660 1425348 1781685 2138022 2375580 3563370 4276044 5345055 7126740 10690110 21380220
- Sum of all divisors σ(n): 71174880
- Sum of proper divisors (its aliquot sum) s(n): 49794660
- 21380220 is an abundant number, because the sum of its proper divisors (49794660) is greater than itself. Its abundance is 28414440
Bases of 21380220
- Binary: 10100011000111100011111002
- Hexadecimal: 0x1463C7C
- Base-36: CQ930
Squares and roots of 21380220
- 21380220 squared (213802202) is 457113807248400
- 21380220 cubed (213802203) is 9773193764008386648000
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The
square root of 21380220 is 4623.8749983103 -
The
cube root of 21380220 is 277.5475448119
Scales and comparisons
How big is 21380220?- 21,380,220 seconds is equal to 35 weeks, 2 days, 10 hours, 57 minutes.
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To count from 1 to 21,380,220 would take you about four hours!
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 21380220 cubic inches would be around 23.1 feet tall.
Recreational maths with 21380220
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The information we have on file for 21380220 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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