81532104720

Names of 81532104720

• Cardinal: 81532104720 can be written as Eighty-one billion, five hundred thirty-two million, one hundred four thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 8.153210472 × 10¹⁰

Factors of 81532104720

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 889

Divisors of 81532104720

• Number of divisors d(n): 640
• Complete list of divisors:
  1 2 3 4 5 6 8 10 11 12 15 16 17 20 22 24 30 33 34 40 41 44 48 51 55 59 60 66 68 80 82 85 88 102 110 118 120 123 132 136 164 165 170 176 177 187 204 205 220 236 240 246 255 264 272 295 328 330 340 354 374 408 410 440 451 472 492 510 528 561 590 615 649 656 660 680 697 708 748 751 816 820 880 885 902 935 944 984 1003 1020 1122 1180 1230 1298 1320 1353 1360 1394 1416 1496 1502 1640 1770 1804 1870 1947 1968 2006 2040 2091 2244 2253 2255 2360 2419 2460 2596 2640 2706 2788 2805 2832 2992 3004 3009 3245 3280 3485 3540 3608 3740 3755 3894 4012 4080 4182 4488 4506 4510 4720 4838 4920 5015 5192 5412 5576 5610 6008 6018 6490 6765 6970 7080 7216 7257 7480 7510 7667 7788 8024 8261 8364 8976 9012 9020 9676 9735 9840 10030 10384 10455 10824 11033 11152 11220 11265 12016 12036 12095 12767 12980 13530 13940 14160 14514 14960 15020 15045 15334 15576 16048 16522 16728 18024 18040 19352 19470 20060 20910 21648 22066 22440 22530 23001 24072 24190 24783 25534 25960 26609 27060 27880 29028 30040 30090 30668 30791 31152 33044 33099 33456 36048 36080 36285 38301 38335 38704 38940 40120 41123 41305 41820 44132 44309 44880 45060 46002 48144 48380 49566 51068 51920 53218 54120 55165 55760 58056 60080 60180 61336 61582 63835 66088 66198 72570 76602 76670 77880 79827 80240 82246 82610 83640 88264 88618 90120 92004 92373 96760 99132 102136 106436 108240 110330 115005 116112 120360 122672 123164 123369 123915 127670 132176 132396 132927 133045 140437 145140 153204 153340 153955 155760 159654 164492 165220 165495 167280 176528 177236 180240 184008 184746 191505 193520 198264 204272 205615 212872 220660 221545 230010 240720 246328 246738 247830 255340 264792 265854 266090 280874 290280 306408 306680 307910 319308 328984 330440 330990 338701 354472 368016 369492 383010 396528 399135 411230 421311 425744 441320 443090 452353 460020 461865 487399 492656 493476 495660 510680 523447 529584 531708 532180 561748 580560 612816 613360 615820 616845 638616 657968 660880 661980 664635 677402 702185 708944 738984 753253 766020 798270 822460 842622 882640 886180 904706 920040 923730 974798 986952 991320 1016103 1021360 1046894 1063416 1064360 1123496 1231640 1233690 1277232 1323960 1329270 1354804 1357059 1404370 1462197 1477968 1506506 1532040 1570341 1596540 1644920 1685244 1693505 1772360 1809412 1816669 1840080 1847460 1949596 1973904 1982640 2032206 2093788 2106555 2126832 2128720 2246992 2259759 2261765 2436995 2463280 2467380 2617235 2647920 2658540 2709608 2714118 2808740 2924394 3013012 3064080 3140682 3193080 3289840 3370488 3387010 3544720 3618824 3633338 3694920 3766265 3899192 4064412 4187576 4213110 4519518 4523530 4873990 4934760 5080515 5234470 5317080 5419216 5428236 5450007 5617480 5757917 5848788 6026024 6281364 6386160 6740976 6774020 6785295 7237648 7266676 7310985 7389840 7532530 7798384 7851705 8128824 8285783 8375152 8426220 9039036 9047060 9083345 9747980 9869520 10161030 10468940 10634160 10856472 10900014 11234960 11298795 11515834 11697576 12052048 12562728 13548040 13570590 14533352 14621970 15065060 15703410 16257648 16571566 16852440 17273751 18078072 18094120 18166690 19495960 19983359 20322060 20937880 21712944 21800028 22597590 23031668 23395152 24857349 25125456 27096080 27141180 27250035 28789585 29066704 29243940 30130120 30883373 31406820 33143132 33704880 34547502 36156144 36188240 36333380 38991920 39966718 40644120 41428915 41875760 43600056 45195180 46063336 49714698 54282360 54500070 57579170 58487880 59950077 60260240 61766746 62813640 66286264 69095004 72666760 79933436 81288240 82857830 86368755 87200112 90390360 92126672 92650119 99429396 99916795 108564720 109000140 115158340 116975760 119900154 123533492 124286745 125627280 132572528 138190008 145333520 154416865 159866872 165715660 172737510 180780720 185300238 198858792 199833590 218000280 230316680 239800308 247066984 248573490 276380016 299750385 308833730 319733744 331431320 339717103 345475020 370600476 397717584 399667180 436000560 460633360 463250595 479600616 494133968 497146980 599500770 617667460 662862640 679434206 690950040 741200952 799334360 926501190 959201232 994293960 1019151309 1199001540 1235334920 1358868412 1381900080 1482401904 1598668720 1698585515 1853002380 1988587920 2038302618 2398003080 2470669840 2717736824 3397171030 3706004760 4076605236 4796006160 5095756545 5435473648 6794342060 7412009520 8153210472 10191513090 13588684120 16306420944 20383026180 27177368240 40766052360 81532104720
• Sum of all divisors σ(n): 304540508160
• Sum of proper divisors (its aliquot sum) s(n): 223008403440
• 81532104720 is an abundant number, because the sum of its proper divisors (223008403440) is greater than itself. Its abundance is 141476298720

Bases of 81532104720

• Binary: 1001011111011101100010011000000010000₂
• Hexadecimal: 0x12FBB13010
• Base-36: 11GE3YMO

Squares and roots of 81532104720

• 81532104720 squared (81532104720²) is 6647484100073046278400
• 81532104720 cubed (81532104720³) is 541983369771690568819915074048000
• The square root of 81532104720 is 285538.2719006333
• The cube root of 81532104720 is 4336.2024572093

Scales and comparisons

• 81,532,104,720 seconds is equal to 2,592 years, 24 weeks, 2 days, 14 hours, 52 minutes.
• To count from 1 to 81,532,104,720 would take you about five thousand, one hundred eighty-four 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 81532104720 cubic inches would be around 361.4 feet tall.

Recreational maths with 81532104720

• 81532104720 backwards is 02740123518
• 81532104720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81532104720's digits is 33
• More coming soon!