81307143720
81,307,143,720 is an even composite number composed of seven prime numbers multiplied together.
81307143720 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 81307143720:
23 × 32 × 5 × 11 × 17 × 139 × 8689
(2 × 2 × 2 × 3 × 3 × 5 × 11 × 17 × 139 × 8689)See below for interesting mathematical facts about the number 81307143720 from the Numbermatics database.
Names of 81307143720
- Cardinal: 81307143720 can be written as Eighty-one billion, three hundred seven million, one hundred forty-three thousand, seven hundred twenty.
Scientific notation
- Scientific notation: 8.130714372 × 1010
Factors of 81307143720
Divisors of 81307143720
- Number of divisors d(n): 384
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Complete list of divisors:
1 2 3 4 5 6 8 9 10 11 12 15 17 18 20 22 24 30 33 34 36 40 44 45 51 55 60 66 68 72 85 88 90 99 102 110 120 132 136 139 153 165 170 180 187 198 204 220 255 264 278 306 330 340 360 374 396 408 417 440 495 510 556 561 612 660 680 695 748 765 792 834 935 990 1020 1112 1122 1224 1251 1320 1390 1496 1529 1530 1668 1683 1870 1980 2040 2085 2244 2363 2502 2780 2805 3058 3060 3336 3366 3740 3960 4170 4488 4587 4726 5004 5560 5610 6116 6120 6255 6732 7089 7480 7645 8340 8415 8689 9174 9452 10008 11220 11815 12232 12510 13464 13761 14178 15290 16680 16830 17378 18348 18904 21267 22440 22935 23630 25020 25993 26067 27522 28356 30580 33660 34756 35445 36696 42534 43445 45870 47260 50040 51986 52134 55044 56712 61160 67320 68805 69512 70890 77979 78201 85068 86890 91740 94520 95579 103972 104268 106335 110088 129965 130335 137610 141780 147713 155958 156402 170136 173780 183480 191158 207944 208536 212670 233937 259930 260670 275220 283560 286737 295426 311916 312804 347560 382316 389895 391005 425340 443139 467874 477895 519860 521340 550440 573474 590852 623832 625608 738565 764632 779790 782010 850680 860211 886278 935748 955790 1039720 1042680 1146948 1169685 1181704 1207771 1329417 1433685 1477130 1559580 1564020 1624843 1720422 1772556 1871496 1911580 2215695 2293896 2339370 2415542 2658834 2867370 2954260 3119160 3128040 3249686 3440844 3545112 3623313 3823160 4301055 4431390 4678740 4831084 4874529 5317668 5734740 5908520 6038855 6499372 6647085 6881688 7246626 8124215 8602110 8862780 9357480 9662168 9749058 10635336 10869939 11469480 12077710 12998744 13285481 13294170 14493252 14623587 16248430 17204220 17725560 18116565 19498116 20532107 21739878 24155420 24372645 26570962 26588340 28986504 29247174 32496860 34408440 36233130 38996232 39856443 41064214 43479756 48310840 48745290 53141924 53176680 54349695 58494348 61596321 64993720 66427405 72466260 73117935 79712886 82128428 86959512 97490580 102660535 106283848 108699390 116988696 119569329 123192642 132854810 144932520 146235870 159425772 164256856 184788963 194981160 199282215 205321070 217398780 225853177 239138658 246385284 265709620 292471740 307981605 318851544 369577926 398564430 410642140 434797560 451706354 478277316 492770568 531419240 584943480 597846645 615963210 677559531 739155852 797128860 821284280 903412708 923944815 956554632 1129265885 1195693290 1231926420 1355119062 1478311704 1594257720 1806825416 1847889630 2032678593 2258531770 2391386580 2463852840 2710238124 3387797655 3695779260 4065357186 4517063540 4782773160 5420476248 6775595310 7391558520 8130714372 9034127080 10163392965 13551190620 16261428744 20326785930 27102381240 40653571860 81307143720
- Sum of all divisors σ(n): 307459152000
- Sum of proper divisors (its aliquot sum) s(n): 226152008280
- 81307143720 is an abundant number, because the sum of its proper divisors (226152008280) is greater than itself. Its abundance is 144844864560
Bases of 81307143720
- Binary: 10010111011100100100010001110001010002
- Hexadecimal: 0x12EE488E28
- Base-36: 11CO69M0
Squares and roots of 81307143720
- 81307143720 squared (813071437202) is 6610851619904735438400
- 81307143720 cubed (813071437203) is 537509462771189136998566006848000
-
The
square root of 81307143720 is 285144.0753724335 -
The
cube root of 81307143720 is 4332.2106759317
Scales and comparisons
How big is 81307143720?- 81,307,143,720 seconds is equal to 2,585 years, 16 weeks, 2 days, 21 hours, 42 minutes.
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To count from 1 to 81,307,143,720 would take you about five thousand, one hundred seventy 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 81307143720 cubic inches would be around 361 feet tall.
Recreational maths with 81307143720
- 81307143720 backwards is 02734170318
- 81307143720 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81307143720's digits is 36
- More coming soon!
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The information we have on file for 81307143720 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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