81224742690
81,224,742,690 is an even composite number composed of seven prime numbers multiplied together.
81224742690 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 81224742690:
2 × 32 × 5 × 73 × 13 × 31 × 6529
(2 × 3 × 3 × 5 × 7 × 7 × 7 × 13 × 31 × 6529)See below for interesting mathematical facts about the number 81224742690 from the Numbermatics database.
Names of 81224742690
- Cardinal: 81224742690 can be written as Eighty-one billion, two hundred twenty-four million, seven hundred forty-two thousand, six hundred ninety.
Scientific notation
- Scientific notation: 8.122474269 × 1010
Factors of 81224742690
Divisors of 81224742690
- Number of divisors d(n): 384
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Complete list of divisors:
1 2 3 5 6 7 9 10 13 14 15 18 21 26 30 31 35 39 42 45 49 62 63 65 70 78 90 91 93 98 105 117 126 130 147 155 182 186 195 210 217 234 245 273 279 294 310 315 343 390 403 434 441 455 465 490 546 558 585 630 637 651 686 735 806 819 882 910 930 1029 1085 1170 1209 1274 1302 1365 1395 1470 1519 1638 1715 1911 1953 2015 2058 2170 2205 2418 2730 2790 2821 3038 3087 3185 3255 3430 3627 3822 3906 4030 4095 4410 4459 4557 5145 5642 5733 6045 6174 6370 6510 6529 7254 7595 8190 8463 8918 9114 9555 9765 10290 10633 11466 12090 13058 13377 13671 14105 15190 15435 16926 18135 19110 19530 19587 19747 21266 22295 22785 25389 26754 27342 28210 28665 30870 31899 32645 36270 39174 39494 40131 42315 44590 45570 45703 50778 53165 57330 58761 59241 63798 65290 66885 68355 80262 84630 84877 91406 95697 97935 98735 106330 117522 118482 126945 133770 136710 137109 138229 159495 169754 177723 191394 195870 197470 200655 202399 228515 253890 254631 274218 276458 293805 296205 318990 319921 355446 401310 404798 411327 414687 424385 457030 478485 509262 587610 592410 594139 607197 639842 685545 691145 763893 822654 829374 848770 888615 956970 959763 1011995 1188278 1214394 1244061 1273155 1371090 1382290 1416793 1527786 1599605 1777230 1782417 1821591 1919526 2023990 2056635 2073435 2239447 2488122 2546310 2631187 2833586 2879289 2970695 3035985 3199210 3564834 3643182 3819465 4113270 4146870 4158973 4250379 4478894 4798815 5262374 5347251 5758578 5941390 6071970 6220305 6718341 7083965 7638930 7893561 8317946 8500758 8912085 9107955 9597630 9917551 10694502 11197235 12440610 12476919 12751137 13155935 13436682 14167930 14396445 15787122 17824170 18215910 18418309 19835102 20155023 20794865 21251895 22394470 23680683 24953838 25502274 26311870 26736255 28792890 29112811 29752653 33591705 36836618 37430757 39467805 40310046 41589730 42503790 47361366 49587755 53472510 55254927 58225622 59505306 62384595 63755685 67183410 69422857 74861514 78935610 87338433 89257959 92091545 99175510 100775115 110509854 118403415 124769190 127511370 128928163 138845714 145564055 148763265 165764781 174676866 178515918 184183090 187153785 201550230 208268571 236806830 257856326 262015299 276274635 291128110 297526530 331529562 347114285 374307570 386784489 416537142 436692165 446289795 524030598 552549270 624805713 644640815 694228570 773568978 828823905 873384330 892579590 902497141 1041342855 1160353467 1249611426 1289281630 1310076495 1657647810 1804994282 1933922445 2082685710 2320706934 2620152990 2707491423 3124028565 3867844890 4512485705 5414982846 5801767335 6248057130 8122474269 9024971410 11603534670 13537457115 16244948538 27074914230 40612371345 81224742690
- Sum of all divisors σ(n): 273821184000
- Sum of proper divisors (its aliquot sum) s(n): 192596441310
- 81224742690 is an abundant number, because the sum of its proper divisors (192596441310) is greater than itself. Its abundance is 111371698620
Bases of 81224742690
- Binary: 10010111010010101111100110111001000102
- Hexadecimal: 0x12E95F3722
- Base-36: 11BB44KI
Squares and roots of 81224742690
- 81224742690 squared (812247426902) is 6597458825056708436100
- 81224742690 cubed (812247426903) is 535876895473100867380574807109000
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The
square root of 81224742690 is 284999.5485785901 -
The
cube root of 81224742690 is 4330.7466828667
Scales and comparisons
How big is 81224742690?- 81,224,742,690 seconds is equal to 2,582 years, 36 weeks, 1 day, 4 hours, 31 minutes, 30 seconds.
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To count from 1 to 81,224,742,690 would take you about five thousand, one hundred sixty-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 81224742690 cubic inches would be around 360.9 feet tall.
Recreational maths with 81224742690
- 81224742690 backwards is 09624742218
- 81224742690 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81224742690's digits is 45
- More coming soon!
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The information we have on file for 81224742690 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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