21005496820
21,005,496,820 is an even composite number composed of seven prime numbers multiplied together.
21005496820 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21005496820:
22 × 5 × 7 × 11 × 172 × 109 × 433
(2 × 2 × 5 × 7 × 11 × 17 × 17 × 109 × 433)See below for interesting mathematical facts about the number 21005496820 from the Numbermatics database.
Names of 21005496820
- Cardinal: 21005496820 can be written as Twenty-one billion, five million, four hundred ninety-six thousand, eight hundred twenty.
Scientific notation
- Scientific notation: 2.100549682 × 1010
Factors of 21005496820
Divisors of 21005496820
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 4 5 7 10 11 14 17 20 22 28 34 35 44 55 68 70 77 85 109 110 119 140 154 170 187 218 220 238 289 308 340 374 385 433 436 476 545 578 595 748 763 770 866 935 1090 1156 1190 1199 1309 1445 1526 1540 1732 1853 1870 2023 2165 2180 2380 2398 2618 2890 3031 3052 3179 3706 3740 3815 4046 4330 4763 4796 5236 5780 5995 6062 6358 6545 7361 7412 7630 8092 8393 8660 9265 9526 10115 11990 12124 12716 12971 13090 14722 15155 15260 15895 16786 18530 19052 20230 20383 22253 23815 23980 25942 26180 29444 30310 31501 31790 33341 33572 36805 37060 40460 40766 41965 44506 47197 47630 51527 51884 60620 63002 63580 64855 66682 73610 80971 81532 83930 89012 94394 95260 101915 103054 111265 125137 126004 129710 133364 142681 147220 157505 161942 166705 167860 188788 203830 206108 220507 222530 235985 250274 257635 259420 285362 315010 323884 330379 333410 346511 404855 407660 441014 445060 471970 500548 515270 519167 566797 570724 625685 630020 660758 666820 693022 713405 802349 809710 875959 882028 943940 1030540 1038334 1102535 1133594 1251370 1321516 1376507 1386044 1426810 1604698 1619420 1651895 1732555 1751918 2076668 2205070 2267188 2425577 2502740 2595835 2753014 2833985 2853620 3209396 3303790 3465110 3503836 3634169 4011745 4379795 4410140 4851154 5191670 5506028 5616443 5667970 6607580 6882535 6930220 7268338 8023490 8759590 8825839 9635549 9702308 10383340 11232886 11335940 12127885 13639933 13765070 14536676 16046980 17519180 17651678 18170845 19271098 22465772 24255770 27279866 27530140 28082215 35303356 36341690 38542196 44129195 48177745 48511540 54559732 56164430 61780873 68199665 72683380 88258390 95479531 96355490 112328860 123561746 136399330 150039263 176516780 190959062 192710980 247123492 272798660 300078526 308904365 381918124 477397655 600157052 617808730 750196315 954795310 1050274841 1235617460 1500392630 1909590620 2100549682 3000785260 4201099364 5251374205 10502748410 21005496820
- Sum of all divisors σ(n): 59093717760
- Sum of proper divisors (its aliquot sum) s(n): 38088220940
- 21005496820 is an abundant number, because the sum of its proper divisors (38088220940) is greater than itself. Its abundance is 17082724120
Bases of 21005496820
- Binary: 100111001000000011001110001111101002
- Hexadecimal: 0x4E40671F4
- Base-36: 9NE4P2S
Squares and roots of 21005496820
- 21005496820 squared (210054968202) is 441230896655030112400
- 21005496820 cubed (210054968203) is 9268274196572983663022442568000
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The
square root of 21005496820 is 144932.7320518039 -
The
cube root of 21005496820 is 2759.1648745811
Scales and comparisons
How big is 21005496820?- 21,005,496,820 seconds is equal to 667 years, 47 weeks, 2 days, 4 hours, 13 minutes, 40 seconds.
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To count from 1 to 21,005,496,820 would take you about one thousand, three hundred thirty-five 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 21005496820 cubic inches would be around 229.9 feet tall.
Recreational maths with 21005496820
- 21005496820 backwards is 02869450012
- The number of decimal digits it has is: 11
- The sum of 21005496820's digits is 37
- More coming soon!
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