21009940
21,009,940 is an even composite number composed of six prime numbers multiplied together.
What does the number 21009940 look like?
This visualization shows the relationship between its 6 prime factors (large circles) and 96 divisors.
21009940 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21009940:
22 × 5 × 7 × 31 × 47 × 103
(2 × 2 × 5 × 7 × 31 × 47 × 103)See below for interesting mathematical facts about the number 21009940 from the Numbermatics database.
Names of 21009940
- Cardinal: 21009940 can be written as Twenty-one million, nine thousand, nine hundred forty.
Scientific notation
- Scientific notation: 2.100994 × 107
Factors of 21009940
Divisors of 21009940
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 4 5 7 10 14 20 28 31 35 47 62 70 94 103 124 140 155 188 206 217 235 310 329 412 434 470 515 620 658 721 868 940 1030 1085 1316 1442 1457 1645 2060 2170 2884 2914 3193 3290 3605 4340 4841 5828 6386 6580 7210 7285 9682 10199 12772 14420 14570 15965 19364 20398 22351 24205 29140 31930 33887 40796 44702 48410 50995 63860 67774 89404 96820 101990 111755 135548 150071 169435 203980 223510 300142 338870 447020 600284 677740 750355 1050497 1500710 2100994 3001420 4201988 5252485 10504970 21009940
- Sum of all divisors σ(n): 53673984
- Sum of proper divisors (its aliquot sum) s(n): 32664044
- 21009940 is an abundant number, because the sum of its proper divisors (32664044) is greater than itself. Its abundance is 11654104
Bases of 21009940
- Binary: 10100000010010110000101002
- Hexadecimal: 0x1409614
- Base-36: CIBDG
Squares and roots of 21009940
- 21009940 squared (210099402) is 441417578803600
- 21009940 cubed (210099403) is 9274156845608907784000
-
The
square root of 21009940 is 4583.6601095631 -
The
cube root of 21009940 is 275.9359404645
Scales and comparisons
How big is 21009940?- 21,009,940 seconds is equal to 34 weeks, 5 days, 4 hours, 5 minutes, 40 seconds.
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To count from 1 to 21,009,940 would take you about eighteen 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 21009940 cubic inches would be around 23 feet tall.
Recreational maths with 21009940
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"Number 21009940 - Facts about the integer". Numbermatics.com. 2024. Web. 9 June 2024.
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The information we have on file for 21009940 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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