81990900992
81,990,900,992 is an even composite number composed of seven prime numbers multiplied together.
81990900992 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of eight hundred sixty-four divisors.
Prime factorization of 81990900992:
28 × 7 × 112 × 13 × 17 × 29 × 59
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 11 × 11 × 13 × 17 × 29 × 59)See below for interesting mathematical facts about the number 81990900992 from the Numbermatics database.
Names of 81990900992
- Cardinal: 81990900992 can be written as Eighty-one billion, nine hundred ninety million, nine hundred thousand, nine hundred ninety-two.
Scientific notation
- Scientific notation: 8.1990900992 × 1010
Factors of 81990900992
Divisors of 81990900992
- Number of divisors d(n): 864
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Complete list of divisors:
1 2 4 7 8 11 13 14 16 17 22 26 28 29 32 34 44 52 56 58 59 64 68 77 88 91 104 112 116 118 119 121 128 136 143 154 176 182 187 203 208 221 224 232 236 238 242 256 272 286 308 319 352 364 374 377 406 413 416 442 448 464 472 476 484 493 544 572 616 638 649 704 728 748 754 767 812 826 832 847 884 896 928 944 952 968 986 1001 1003 1088 1144 1232 1276 1298 1309 1408 1456 1496 1508 1534 1547 1573 1624 1652 1664 1694 1711 1768 1792 1856 1888 1904 1936 1972 2002 2006 2057 2176 2233 2288 2431 2464 2552 2596 2618 2639 2816 2912 2992 3016 3068 3094 3146 3248 3304 3328 3388 3422 3451 3509 3536 3712 3776 3808 3872 3944 4004 4012 4114 4147 4352 4466 4543 4576 4862 4928 5104 5192 5236 5278 5369 5423 5824 5984 6032 6136 6188 6292 6409 6496 6608 6776 6844 6902 7018 7021 7072 7139 7424 7552 7616 7744 7888 8008 8024 8228 8294 8437 8932 9086 9152 9724 9856 10208 10384 10472 10556 10738 10846 11011 11033 11648 11968 11977 12064 12272 12376 12584 12818 12992 13039 13216 13552 13688 13804 14036 14042 14144 14278 14399 15104 15232 15488 15776 16016 16048 16456 16588 16874 17017 17864 18172 18304 18821 19448 19712 20416 20768 20944 21112 21476 21692 22022 22066 22243 23296 23936 23954 24128 24544 24563 24752 25168 25636 25984 26078 26432 26741 27104 27376 27608 28072 28084 28288 28556 28798 29029 29087 30464 30976 31552 32032 32096 32912 33176 33748 34034 35728 36344 36608 37642 37961 38896 40832 41536 41888 42224 42952 43384 44044 44132 44486 44863 45617 47872 47908 48256 49088 49126 49504 49973 50336 51272 51968 52156 52864 53482 54208 54752 55216 56144 56168 56576 57112 57596 58058 58174 59059 59653 63104 64064 64192 65824 66352 67496 68068 70499 71456 72688 75284 75922 77231 77792 81664 83072 83776 84448 85904 86768 88088 88264 88972 89726 91234 91273 92807 95816 96512 98176 98252 99008 99946 100672 102544 104312 105728 106964 108416 109504 110432 112288 112336 114224 115192 116116 116348 118118 119306 121363 126208 128128 128384 131648 131747 132704 134992 136136 140998 142912 143429 145376 150568 151844 154462 155584 155701 166144 167552 168896 171808 173536 176176 176528 177944 179452 182468 182546 185614 187187 191632 196352 196504 198016 199892 201344 203609 205088 207031 208624 213928 216832 219008 220864 224576 224672 228448 230384 232232 232696 236236 238612 242726 244673 256256 256768 263296 263494 265408 269984 272272 281996 285824 286858 290752 301136 303688 308924 311168 311402 319319 319957 335104 337792 343616 347072 352352 353056 355888 358904 364936 365092 371228 374374 378131 383264 393008 396032 399784 402688 407218 410176 414062 417248 417571 427856 438016 441728 449152 449344 456896 460768 464464 465392 472472 477224 485452 489346 493493 526592 526988 530816 539968 544544 563992 571648 573716 581504 602272 607376 617848 622336 622804 638638 639914 649649 675584 687232 694144 704704 706112 711776 717808 729872 730184 742456 748748 756262 766528 775489 786016 799568 814436 820352 828124 834496 835142 849541 855712 883456 898304 898688 913792 921536 928928 930784 944944 954448 970904 978692 986986 1004003 1053976 1061632 1079936 1089088 1127984 1147432 1163008 1204544 1214752 1235696 1245608 1277276 1279828 1299298 1374464 1388288 1409408 1412224 1423552 1435616 1449217 1459744 1460368 1484912 1497496 1512524 1533056 1550978 1572032 1577719 1599136 1628872 1640704 1656248 1668992 1670284 1699082 1711424 1712711 1797376 1827584 1843072 1857856 1861568 1889888 1908896 1941808 1957384 1973972 2008006 2107952 2159872 2178176 2239699 2255968 2294864 2409088 2429504 2471392 2491216 2554552 2559656 2598596 2646917 2691403 2818816 2824448 2847104 2871232 2898434 2919488 2920736 2969824 2994992 3025048 3066112 3101956 3144064 3155438 3198272 3257744 3312496 3337984 3340568 3398164 3422848 3425422 3519527 3686144 3715712 3723136 3779776 3817792 3883616 3914768 3947944 4016012 4159441 4215904 4356352 4479398 4511936 4589728 4818176 4859008 4942784 4982432 5109104 5119312 5197192 5293834 5382806 5428423 5694208 5742464 5796868 5838976 5841472 5939648 5989984 6050096 6203912 6288128 6310876 6396544 6515488 6624992 6681136 6796328 6845696 6850844 7039054 7431424 7446272 7559552 7635584 7767232 7829536 7895888 8032024 8318882 8431808 8958796 9023872 9179456 9718016 9885568 9964864 10218208 10238624 10394384 10587668 10765612 10856846 11044033 11484928 11593736 11677952 11682944 11879296 11979968 12100192 12407824 12621752 12793088 13030976 13249984 13362272 13592656 13701688 14078108 15119104 15271168 15534464 15659072 15791776 16064048 16637764 16863616 17917592 18047744 18358912 18839821 19771136 19929728 20436416 20477248 20788768 21175336 21531224 21713692 22088066 23187472 23365888 23758592 23959936 24200384 24636689 24815648 25243504 26061952 26499968 26724544 27185312 27403376 28156216 29116087 31068928 31318144 31583552 32128096 33275528 33727232 35835184 36717824 37679642 39859456 40872832 40954496 41577536 42350672 43062448 43427384 44176132 45753851 46374944 47919872 48400768 49273378 49631296 50487008 52123904 52999936 53449088 54370624 54806752 56312432 58232174 62636288 63167104 64256192 66551056 71670368 75359284 81745664 81908992 83155072 84701344 86124896 86854768 88352264 91507702 92749888 96801536 98546756 99262592 100974016 106898176 108741248 109613504 112624864 116464348 126334208 128512384 133102112 143340736 150718568 166310144 169402688 172249792 173709536 176704528 183015404 185499776 197093512 198525184 201948032 217482496 219227008 225249728 232928696 257024768 266204224 286681472 301437136 320276957 338805376 344499584 347419072 353409056 366030808 370999552 394187024 403896064 438454016 450499456 465857392 532408448 573362944 602874272 640553914 677610752 688999168 694838144 706818112 732061616 788374048 900998912 931714784 1064816896 1205748544 1281107828 1389676288 1413636224 1464123232 1576748096 1863429568 2411497088 2562215656 2827272448 2928246464 3153496192 3726859136 4822994176 5124431312 5856492928 6306992384 7453718272 10248862624 11712985856 20497725248 40995450496 81990900992
- Sum of all divisors σ(n): 246624134400
- Sum of proper divisors (its aliquot sum) s(n): 164633233408
- 81990900992 is an abundant number, because the sum of its proper divisors (164633233408) is greater than itself. Its abundance is 82642332416
Bases of 81990900992
- Binary: 10011000101110000100111011101000000002
- Hexadecimal: 0x131709DD00
- Base-36: 11NZ9K3K
Squares and roots of 81990900992
- 81990900992 squared (819909009922) is 6722507845479946584064
- 81990900992 cubed (819909009923) is 551184475176689535095440028991488
-
The
square root of 81990900992 is 286340.5332676461 -
The
cube root of 81990900992 is 4344.3207868497
Scales and comparisons
How big is 81990900992?- 81,990,900,992 seconds is equal to 2,607 years, 2 weeks, 6 days, 18 hours, 16 minutes, 32 seconds.
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To count from 1 to 81,990,900,992 would take you about five thousand, two hundred fourteen 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 81990900992 cubic inches would be around 362 feet tall.
Recreational maths with 81990900992
- 81990900992 backwards is 29900909918
- 81990900992 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 81990900992's digits is 56
- More coming soon!
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The information we have on file for 81990900992 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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