21309955940
21,309,955,940 is an even composite number composed of seven prime numbers multiplied together.
What does the number 21309955940 look like?
This visualization shows the relationship between its 7 prime factors (large circles) and 288 divisors.
21309955940 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 21309955940:
22 × 5 × 72 × 13 × 17 × 61 × 1613
(2 × 2 × 5 × 7 × 7 × 13 × 17 × 61 × 1613)See below for interesting mathematical facts about the number 21309955940 from the Numbermatics database.
Names of 21309955940
- Cardinal: 21309955940 can be written as Twenty-one billion, three hundred nine million, nine hundred fifty-five thousand, nine hundred forty.
Scientific notation
- Scientific notation: 2.130995594 × 1010
Factors of 21309955940
Divisors of 21309955940
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 4 5 7 10 13 14 17 20 26 28 34 35 49 52 61 65 68 70 85 91 98 119 122 130 140 170 182 196 221 238 244 245 260 305 340 364 427 442 455 476 490 595 610 637 793 833 854 884 910 980 1037 1105 1190 1220 1274 1547 1586 1613 1666 1708 1820 2074 2135 2210 2380 2548 2989 3094 3172 3185 3226 3332 3965 4148 4165 4270 4420 5185 5551 5978 6188 6370 6452 7259 7735 7930 8065 8330 8540 10370 10829 11102 11291 11956 12740 13481 14518 14945 15470 15860 16130 16660 20740 20969 21658 22204 22582 26962 27421 27755 29036 29890 30940 32260 36295 38857 41938 43316 45164 50813 53924 54145 54842 55510 56455 59780 67405 72590 77714 79037 83876 94367 98393 101626 104845 108290 109684 111020 112910 134810 137105 145180 146783 155428 158074 188734 191947 194285 196786 203252 209690 216580 225820 254065 269620 274210 293566 316148 356473 377468 383894 388570 393572 395185 419380 471835 491965 508130 548420 587132 660569 688751 712946 733915 767788 777140 790370 943670 959735 983930 1016260 1027481 1279109 1321138 1343629 1377502 1425892 1467830 1580740 1672681 1782365 1887340 1919470 1967860 2054962 2495311 2558218 2642276 2687258 2755004 2935660 3302845 3345362 3443755 3564730 3838940 4109924 4821257 4990622 5116436 5137405 5374516 6395545 6605690 6690724 6718145 6887510 7129460 8363405 8953763 9642514 9981244 10274810 11708767 12476555 12791090 13211380 13436290 13775020 16726810 17467177 17907526 19285028 20549620 21744853 23417534 24106285 24953110 25582180 26872580 33453620 34934354 35815052 43489706 44768815 46835068 48212570 49906220 58543835 62676341 69868708 81961369 86979412 87335885 89537630 96425140 108724265 117087670 125352682 152213971 163922738 174671770 179075260 217448530 234175340 250705364 304427942 313381705 327845476 349343540 409806845 434897060 608855884 626763410 761069855 819613690 1065497797 1253526820 1522139710 1639227380 2130995594 3044279420 4261991188 5327488985 10654977970 21309955940
- Sum of all divisors σ(n): 60369823584
- Sum of proper divisors (its aliquot sum) s(n): 39059867644
- 21309955940 is an abundant number, because the sum of its proper divisors (39059867644) is greater than itself. Its abundance is 17749911704
Bases of 21309955940
- Binary: 100111101100010110000011111011001002
- Hexadecimal: 0x4F62C1F64
- Base-36: 9SFEB8K
Squares and roots of 21309955940
- 21309955940 squared (213099559402) is 454114222164741283600
- 21309955940 cubed (213099559403) is 9677154066058008175015044584000
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The
square root of 21309955940 is 145979.2996969091 -
The
cube root of 21309955940 is 2772.4316659325
Scales and comparisons
How big is 21309955940?- 21,309,955,940 seconds is equal to 677 years, 30 weeks, 5 days, 12 minutes, 20 seconds.
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To count from 1 to 21,309,955,940 would take you about one thousand, three hundred fifty-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 21309955940 cubic inches would be around 231 feet tall.
Recreational maths with 21309955940
- 21309955940 backwards is 04955990312
- The number of decimal digits it has is: 11
- The sum of 21309955940's digits is 47
- More coming soon!
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