21398942240
21,398,942,240 is an even composite number composed of five prime numbers multiplied together.
21398942240 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of two hundred sixteen divisors.
Prime factorization of 21398942240:
25 × 5 × 132 × 292 × 941
(2 × 2 × 2 × 2 × 2 × 5 × 13 × 13 × 29 × 29 × 941)See below for interesting mathematical facts about the number 21398942240 from the Numbermatics database.
Names of 21398942240
- Cardinal: 21398942240 can be written as Twenty-one billion, three hundred ninety-eight million, nine hundred forty-two thousand, two hundred forty.
Scientific notation
- Scientific notation: 2.139894224 × 1010
Factors of 21398942240
Divisors of 21398942240
- Number of divisors d(n): 216
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Complete list of divisors:
1 2 4 5 8 10 13 16 20 26 29 32 40 52 58 65 80 104 116 130 145 160 169 208 232 260 290 338 377 416 464 520 580 676 754 841 845 928 941 1040 1160 1352 1508 1682 1690 1882 1885 2080 2320 2704 3016 3364 3380 3764 3770 4205 4640 4705 4901 5408 6032 6728 6760 7528 7540 8410 9410 9802 10933 12064 12233 13456 13520 15056 15080 16820 18820 19604 21866 24466 24505 26912 27040 27289 30112 30160 33640 37640 39208 43732 48932 49010 54578 54665 60320 61165 67280 75280 78416 87464 97864 98020 109156 109330 122330 134560 136445 142129 150560 156832 159029 174928 195728 196040 218312 218660 244660 272890 284258 318058 349856 354757 391456 392080 436624 437320 489320 545780 568516 636116 709514 710645 784160 791381 795145 873248 874640 978640 1091560 1137032 1272232 1419028 1421290 1582762 1590290 1749280 1773785 1957280 2183120 2274064 2544464 2838056 2842580 3165524 3180580 3547570 3956905 4366240 4548128 4611841 5088928 5676112 5685160 6331048 6361160 7095140 7913810 9223682 10287953 11352224 11370320 12662096 12722320 14190280 15827620 18447364 20575906 22740640 23059205 25324192 25444640 28380560 31655240 36894728 41151812 46118410 51439765 56761120 63310480 73789456 82303624 92236820 102879530 126620960 133743389 147578912 164607248 184473640 205759060 267486778 329214496 368947280 411518120 534973556 668716945 737894560 823036240 1069947112 1337433890 1646072480 2139894224 2674867780 4279788448 5349735560 10699471120 21398942240
- Sum of all divisors σ(n): 56756021868
- Sum of proper divisors (its aliquot sum) s(n): 35357079628
- 21398942240 is an abundant number, because the sum of its proper divisors (35357079628) is greater than itself. Its abundance is 13958137388
Bases of 21398942240
- Binary: 100111110110111100111110010001000002
- Hexadecimal: 0x4FB79F220
- Base-36: 9TWDLI8
Squares and roots of 21398942240
- 21398942240 squared (213989422402) is 457914728990856217600
- 21398942240 cubed (213989422403) is 9798890836520585688567271424000
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The
square root of 21398942240 is 146283.7729893511 -
The
cube root of 21398942240 is 2776.2853549261
Scales and comparisons
How big is 21398942240?- 21,398,942,240 seconds is equal to 680 years, 21 weeks, 5 days, 22 hours, 37 minutes, 20 seconds.
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To count from 1 to 21,398,942,240 would take you about one thousand, three hundred sixty 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 21398942240 cubic inches would be around 231.4 feet tall.
Recreational maths with 21398942240
- 21398942240 backwards is 04224989312
- The number of decimal digits it has is: 11
- The sum of 21398942240's digits is 44
- More coming soon!
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