81437094720

Names of 81437094720

• Cardinal: 81437094720 can be written as Eighty-one billion, four hundred thirty-seven million, ninety-four thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 8.143709472 × 10¹⁰

Factors of 81437094720

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 168

Divisors of 81437094720

• Number of divisors d(n): 1008
• Complete list of divisors:
  1 2 3 4 5 6 8 9 10 12 15 16 18 19 20 24 29 30 32 36 37 38 40 45 48 57 58 60 64 72 73 74 76 80 87 90 95 96 111 114 116 120 144 145 146 148 152 160 171 174 180 185 190 192 219 222 228 232 240 261 285 288 290 292 296 304 320 333 342 348 360 361 365 370 380 435 438 444 456 464 480 522 551 555 570 576 580 584 592 608 657 666 684 696 703 720 722 730 740 760 855 870 876 888 912 928 960 1044 1073 1083 1095 1102 1110 1140 1160 1168 1184 1216 1305 1314 1332 1368 1387 1392 1406 1440 1444 1460 1480 1520 1653 1665 1710 1740 1752 1776 1805 1824 1856 2088 2109 2117 2146 2166 2190 2204 2220 2280 2320 2336 2368 2610 2628 2664 2701 2736 2755 2774 2784 2812 2880 2888 2920 2960 3040 3219 3249 3285 3306 3330 3420 3480 3504 3515 3552 3610 3648 4161 4176 4218 4234 4292 4332 4380 4408 4440 4560 4640 4672 4959 5220 5256 5328 5365 5402 5415 5472 5510 5548 5568 5624 5776 5840 5920 6080 6327 6351 6438 6498 6570 6612 6660 6840 6935 6960 7008 7030 7104 7220 8103 8265 8322 8352 8436 8468 8584 8664 8760 8816 8880 9120 9280 9657 9918 10440 10469 10512 10545 10585 10656 10730 10804 10830 10944 11020 11096 11248 11552 11680 11840 12483 12654 12702 12876 12996 13140 13224 13320 13357 13505 13680 13870 13920 14016 14060 14440 16095 16206 16245 16530 16644 16704 16872 16936 17168 17328 17520 17632 17760 18240 19053 19314 19836 20387 20805 20880 20938 21024 21090 21170 21312 21460 21608 21660 22040 22192 22496 23104 23360 24309 24795 24966 25308 25404 25752 25992 26280 26353 26448 26640 26714 27010 27360 27740 27840 28120 28880 31407 31635 31755 32190 32412 32490 33060 33288 33744 33872 34336 34656 35040 35264 35520 38106 38628 39672 40071 40223 40515 40774 41610 41760 41876 42048 42180 42340 42920 43216 43320 44080 44384 44992 48285 48618 49590 49932 50616 50808 51319 51504 51984 52345 52560 52706 52896 53280 53428 54020 54720 55480 56240 57760 61161 62415 62814 63270 63510 64380 64824 64980 66120 66576 66785 67488 67744 68672 69312 70080 76212 77256 78329 79059 79344 80142 80446 81030 81548 83220 83520 83752 84360 84680 85840 86432 86640 88160 88768 94221 95265 96570 97236 99180 99864 101232 101616 101935 102638 103008 103968 104690 105120 105412 105792 106560 106856 108040 110960 112480 115520 120213 120669 121545 122322 124830 125628 126540 127020 128760 129648 129960 131765 132240 133152 133570 134976 135488 152424 153957 154512 156658 157035 158118 158688 160284 160892 162060 163096 166440 167504 168720 169360 171680 172864 173280 176320 183483 188442 190530 193140 194472 198360 199728 200355 201115 202464 203232 203870 205276 206016 207936 209380 210240 210824 213712 216080 221920 224960 234987 237177 240426 241338 243090 244644 249660 251256 253080 254040 256595 257520 259296 259920 263530 264480 266304 267140 304848 305805 307914 309024 313316 314070 316236 317376 320568 321784 324120 326192 332880 335008 337440 338720 343360 346560 362007 366966 376884 381060 386280 387353 388944 391645 395295 396720 399456 400710 402230 404928 406464 407740 410552 418760 421648 427424 432160 443840 461871 469974 471105 474354 480852 482676 486180 489288 499320 502512 506160 508080 513190 515040 518592 519840 527060 528960 534280 601065 603345 609696 611610 615828 618048 626632 628140 632472 641136 643568 648240 652384 665760 670016 674880 677440 704961 724014 733932 753768 762120 764237 769785 772560 774706 777888 783290 790590 793440 798912 801420 804460 815480 821104 837520 843296 854848 864320 917415 923742 939948 942210 948708 961704 965352 972360 975061 978576 998640 1005024 1012320 1016160 1026380 1030080 1039680 1054120 1068560 1162059 1174935 1185885 1202130 1206690 1219392 1223220 1231656 1253264 1256280 1264944 1282272 1287136 1296480 1304768 1331520 1409922 1448028 1467864 1488251 1507536 1524240 1528474 1539570 1545120 1549412 1555776 1566580 1581180 1586880 1602840 1608920 1630960 1642208 1675040 1686592 1810035 1834830 1847484 1879896 1884420 1897416 1923408 1930704 1936765 1944720 1950122 1957152 1997280 2010048 2024640 2032320 2052760 2108240 2137120 2292711 2309355 2324118 2349870 2371770 2404260 2413380 2446440 2463312 2506528 2512560 2529888 2564544 2574272 2592960 2819844 2896056 2925183 2935728 2976502 3015072 3048480 3056948 3079140 3090240 3098824 3133160 3162360 3205680 3217840 3261920 3284416 3350080 3486177 3524805 3620070 3669660 3694968 3759792 3768840 3794832 3821185 3846816 3861408 3873530 3889440 3900244 3914304 3994560 4105520 4216480 4274240 4464753 4585422 4618710 4648236 4699740 4743540 4808520 4826760 4875305 4892880 4926624 5013056 5025120 5059776 5639688 5792112 5810295 5850366 5871456 5953004 6030144 6096960 6113896 6158280 6197648 6266320 6324720 6411360 6435680 6523840 6878133 6972354 7049610 7240140 7339320 7389936 7441255 7519584 7537680 7589664 7642370 7693632 7722816 7747060 7778880 7800488 8211040 8432960 8775549 8929506 9170844 9237420 9296472 9399480 9487080 9617040 9653520 9750610 9785760 9853248 10050240 11279376 11463555 11584224 11620590 11700732 11742912 11906008 12227792 12316560 12395296 12532640 12649440 12822720 12871360 13394259 13756266 13944708 14099220 14480280 14625915 14678640 14779872 14882510 15039168 15075360 15179328 15284740 15494120 15600976 16422080 17430885 17551098 17859012 18341688 18474840 18592944 18798960 18974160 19234080 19307040 19501220 19571520 22323765 22558752 22927110 23168448 23241180 23401464 23812016 24455584 24633120 24790592 25065280 25298880 26788518 27512532 27889416 28198440 28276769 28960560 29251830 29357280 29559744 29765020 30150720 30569480 30988240 31201952 34390665 34861770 35102196 35718024 36683376 36949680 37185888 37597920 37948320 38468160 38614080 39002440 43877745 44647530 45117504 45854220 46482360 46802928 47624032 48911168 49266240 53577036 55025064 55778832 56396880 56553538 57921120 58503660 58714560 59530040 61138960 61976480 62403904 66971295 68781330 69723540 70204392 71436048 73366752 73899360 74371776 75195840 75896640 78004880 84830307 87755490 89295060 91708440 92964720 93605856 95248064 107154072 110050128 111557664 112793760 113107076 115842240 117007320 119060080 122277920 123952960 133942590 137562660 139447080 140408784 141383845 142872096 146733504 147798720 156009760 169660614 175510980 178590120 183416880 185929440 187211712 214308144 220100256 223115328 225587520 226214152 234014640 238120160 244555840 254490921 267885180 275125320 278894160 280817568 282767690 285744192 312019520 339321228 351021960 357180240 366833760 371858880 424151535 428616288 440200512 452428304 468029280 476240320 508981842 535770360 550250640 557788320 561635136 565535380 678642456 702043920 714360480 733667520 848303070 857232576 904856608 936058560 1017963684 1071540720 1100501280 1115576640 1131070760 1272454605 1357284912 1404087840 1428720960 1696606140 1809713216 2035927368 2143081440 2201002560 2262141520 2544909210 2714569824 2808175680 3393212280 4071854736 4286162880 4524283040 5089818420 5429139648 6786424560 8143709472 9048566080 10179636840 13572849120 16287418944 20359273680 27145698240 40718547360 81437094720
• Sum of all divisors σ(n): 318390330960
• Sum of proper divisors (its aliquot sum) s(n): 236953236240
• 81437094720 is an abundant number, because the sum of its proper divisors (236953236240) is greater than itself. Its abundance is 155516141520

Bases of 81437094720

• Binary: 1001011110110000001110111001101000000₂
• Hexadecimal: 0x12F6077340
• Base-36: 11ETJKG0

Squares and roots of 81437094720

• 81437094720 squared (81437094720²) is 6632000396434251878400
• 81437094720 cubed (81437094720³) is 540090844467493720473598722048000
• The square root of 81437094720 is 285371.8534123503
• The cube root of 81437094720 is 4334.5174656369

Scales and comparisons

• 81,437,094,720 seconds is equal to 2,589 years, 23 weeks, 1 day, 23 hours, 12 minutes.
• To count from 1 to 81,437,094,720 would take you about five thousand, one hundred seventy-eight 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 81437094720 cubic inches would be around 361.2 feet tall.

Recreational maths with 81437094720

• 81437094720 backwards is 02749073418
• 81437094720 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81437094720's digits is 45
• More coming soon!