81629697240

Names of 81629697240

• Cardinal: 81629697240 can be written as Eighty-one billion, six hundred twenty-nine million, six hundred ninety-seven thousand, two hundred forty.

Scientific notation

• Scientific notation: 8.162969724 × 10¹⁰

Factors of 81629697240

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 290

Divisors of 81629697240

• Number of divisors d(n): 1152
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 13 14 15 18 20 21 24 26 27 28 30 31 35 36 39 40 42 45 52 54 56 60 62 63 65 70 72 78 81 84 90 91 93 104 105 108 117 120 124 126 130 135 140 155 156 162 168 169 180 182 186 189 195 210 216 217 229 234 243 248 252 260 270 273 279 280 310 312 315 324 338 351 360 364 372 378 390 403 405 420 434 455 458 465 468 486 504 507 520 540 546 558 567 585 620 630 648 651 676 687 702 728 744 756 780 806 810 819 837 840 845 868 910 916 930 936 945 972 1014 1053 1080 1085 1092 1116 1134 1145 1170 1183 1209 1215 1240 1260 1302 1352 1365 1374 1395 1404 1512 1521 1560 1603 1612 1620 1638 1674 1690 1701 1736 1755 1820 1832 1860 1890 1944 1953 2015 2028 2061 2106 2170 2184 2232 2268 2290 2340 2366 2418 2430 2457 2511 2520 2535 2604 2730 2748 2790 2808 2821 2835 2977 3042 3159 3206 3224 3240 3255 3276 3348 3380 3402 3435 3510 3549 3627 3640 3720 3780 3906 4030 4056 4095 4122 4185 4212 4340 4536 4563 4580 4680 4732 4809 4836 4860 4914 5022 5070 5208 5239 5265 5460 5496 5580 5642 5670 5859 5915 5954 6045 6084 6183 6318 6412 6510 6552 6696 6760 6804 6870 7020 7098 7099 7254 7371 7533 7560 7605 7812 8015 8060 8190 8244 8370 8424 8463 8505 8680 8931 9126 9160 9464 9618 9672 9720 9765 9828 10044 10140 10305 10478 10530 10647 10881 10920 11160 11284 11340 11718 11830 11908 12090 12168 12285 12366 12555 12636 12824 13020 13608 13689 13740 14040 14105 14196 14198 14427 14508 14742 14885 15066 15210 15624 15717 15795 16030 16120 16380 16488 16740 16926 17010 17577 17745 17862 18135 18252 18549 19236 19530 19656 20088 20280 20610 20839 20956 21060 21294 21297 21762 22113 22568 22680 22815 23436 23660 23816 24045 24180 24570 24732 25110 25272 25389 26040 26195 26793 27378 27480 28210 28392 28396 28854 29016 29295 29484 29770 30132 30420 30915 31434 31590 31941 32060 32643 32760 33480 33852 34020 35154 35490 35495 35724 36270 36504 36673 36855 37098 37665 38472 38701 39060 41067 41220 41678 41912 42120 42315 42588 42594 43281 43524 44226 44655 45630 46872 47151 47320 48090 48360 49140 49464 49693 50220 50778 52390 52731 53235 53586 54405 54756 55647 56420 56792 57708 58590 58968 59540 60264 60840 61830 62517 62868 63180 63882 63891 64120 65286 67704 68040 68445 70308 70980 70990 71448 72135 72540 73346 73710 74196 75330 76167 77402 78120 78585 80379 82134 82440 83356 84630 85176 85188 86562 87048 87885 88452 89310 91260 92287 92745 94302 95823 96180 97929 98280 99386 100440 101556 104195 104780 105462 106470 106485 107172 108810 109512 110019 110565 111294 112840 115416 116103 117180 119080 123660 125034 125736 126360 126945 127764 127782 129843 130572 133965 136890 140616 141453 141960 141980 144270 145080 146692 147420 148392 149079 150660 152334 154804 157170 159705 160758 163215 164268 166712 169260 170376 173124 175770 176904 178620 182520 183365 184574 185490 187551 188604 191646 191673 192360 193505 195858 198772 203112 205335 208390 209560 210924 212940 212970 214344 216405 217620 220038 221130 222588 228501 232206 234360 235755 241137 247320 248465 250068 253890 255528 255564 259686 261144 263655 267930 270907 273780 276861 278235 282906 283960 287469 288540 293384 294840 298158 301320 304668 309608 312585 314340 319410 319455 321516 326430 328536 330057 338520 346248 348309 351540 357240 366730 369148 370980 375102 377208 380835 383292 383346 387010 389529 391716 397544 401895 410670 416780 421848 424359 425880 425940 432810 435240 440076 442260 445176 447237 457002 461435 464412 471510 479115 482274 489645 496930 500136 507780 511128 519372 527310 535860 541814 547560 550095 553722 556470 562653 565812 574938 575019 577080 580515 596316 609336 625170 628680 638820 638910 643032 646009 649215 652860 660114 685503 696618 703080 707265 723411 733460 738296 741960 745395 750204 761670 766584 766692 774020 779058 783432 803790 812721 821340 830583 833560 848718 851880 865620 880152 884520 894474 914004 922870 928824 937755 943020 958230 958365 964548 979290 990171 993860 1015560 1038744 1044927 1054620 1071720 1083628 1100190 1107444 1112940 1125306 1131624 1142505 1149876 1150038 1161030 1192632 1199731 1205685 1250340 1273077 1277640 1277820 1292018 1298430 1305720 1320228 1341711 1354535 1371006 1384305 1393236 1414530 1437345 1446822 1466920 1490790 1500408 1523340 1533384 1548040 1558116 1607580 1625442 1642680 1650285 1661166 1687959 1697436 1725057 1731240 1741545 1788948 1828008 1845740 1875510 1886040 1916460 1916730 1929096 1938027 1947645 1958580 1980342 1987720 2089854 2109240 2121795 2167256 2200380 2214888 2225880 2236185 2250612 2285010 2299752 2300076 2322060 2399462 2411370 2438163 2491749 2500680 2546154 2555640 2584036 2596860 2640456 2683422 2709070 2742012 2768610 2786472 2813265 2829060 2874690 2875095 2893644 2970513 2981580 3046680 3116232 3134781 3215160 3230045 3250884 3300570 3322332 3375918 3394872 3427515 3450114 3483090 3577896 3599193 3617055 3691480 3751020 3832920 3833460 3876054 3895290 3917160 3960684 4025133 4063605 4152915 4179708 4243590 4400760 4472370 4501224 4570020 4600152 4644120 4798924 4822740 4876326 4950855 4983498 5063877 5092308 5168072 5193720 5224635 5366844 5418140 5484024 5537220 5626530 5658120 5749380 5750190 5787288 5814081 5941026 5963160 5998655 6269562 6365385 6460090 6501768 6601140 6644664 6708555 6751836 6855030 6900228 6966180 7198386 7234110 7314489 7475247 7502040 7666920 7752108 7790580 7921368 8050266 8127210 8305830 8359416 8398117 8439795 8487180 8625285 8911539 8944740 9140040 9404343 9597848 9645480 9690135 9752652 9901710 9966996 10127754 10184616 10449270 10733688 10797579 10836280 11074440 11253060 11498760 11500380 11628162 11882052 11997310 12075399 12190815 12458745 12539124 12730770 12920180 13202280 13417110 13503672 13710060 13800456 13932360 14396772 14468220 14628978 14852565 14950494 15504216 15581160 15673905 16100532 16254420 16611660 16796234 16879590 16974360 17250570 17442243 17823078 17889480 17995965 18808686 19380270 19505304 19803420 19933992 20125665 20255508 20898540 21595158 21943467 22425741 22506120 23000760 23256324 23764104 23994620 24150798 24381630 24917490 25078248 25194351 25319385 25461540 25840360 26834220 27420120 28793544 28936440 29070405 29257956 29705130 29900988 31347810 32201064 32392737 32508840 33223320 33592468 33759180 34501140 34884486 35646156 35991930 36572445 37376235 37617372 38760540 39606840 40251330 40511016 41797080 41990585 43190316 43886934 44557695 44851482 46512648 47021715 47989240 48301596 48763260 49834980 50388702 50638770 50923080 52326729 53668440 53987895 58140810 58515912 59410260 59801976 60376995 62695620 64785474 65830401 67184936 67518360 69002280 69768972 71292312 71983860 73144890 74752470 75234744 75583053 77521080 80502660 83981170 86380632 87211215 87773868 89115390 89702964 94043430 96603192 97178211 97526520 99669960 100777404 101277540 104653458 107975790 109717335 112128705 116281620 118820520 120753990 125391240 125971755 129570948 131660802 139537944 143967720 146289780 149504940 151166106 156980187 161005320 161963685 167962340 174422430 175547736 178230780 179405928 188086860 194356422 201554808 202555080 209306916 215951580 219434670 224257410 226749159 232563240 241507980 251943510 259141896 261633645 263321604 291534633 292579560 299009880 302332212 313960374 323927370 329152005 335924680 348844860 356461560 376173720 377915265 388712844 418613832 431903160 438869340 448514820 453498318 483015960 485891055 503887020 523267290 526643208 583069266 604664424 627920748 647854740 658304010 680247477 697689720 755830530 777425688 784900935 877738680 897029640 906996636 971782110 1007774040 1046534580 1133745795 1166138532 1255841496 1295709480 1316608020 1360494954 1457673165 1511661060 1569801870 1813993272 1943564220 2040742431 2093069160 2267491590 2332277064 2633216040 2720989908 2915346330 3023322120 3139603740 3401237385 3887128440 4081484862 4534983180 5441979816 5830692660 6279207480 6802474770 8162969724 9069966360 10203712155 11661385320 13604949540 16325939448 20407424310 27209899080 40814848620 81629697240
• Sum of all divisors σ(n): 352990310400
• Sum of proper divisors (its aliquot sum) s(n): 271360613160
• 81629697240 is an abundant number, because the sum of its proper divisors (271360613160) is greater than itself. Its abundance is 189730915920

Bases of 81629697240

• Binary: 1001100000001100000100101010011011000₂
• Hexadecimal: 0x13018254D8
• Base-36: 11I07PI0

Squares and roots of 81629697240

• 81629697240 squared (81629697240²) is 6663407471494063617600
• 81629697240 cubed (81629697240³) is 543931934484814343561987135424000
• The square root of 81629697240 is 285709.1129803177
• The cube root of 81629697240 is 4337.9318871557

Scales and comparisons

• 81,629,697,240 seconds is equal to 2,595 years, 29 weeks, 5 days, 3 hours, 54 minutes.
• To count from 1 to 81,629,697,240 would take you about five thousand, one hundred ninety-one 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 81629697240 cubic inches would be around 361.5 feet tall.

Recreational maths with 81629697240

• 81629697240 backwards is 04279692618
• 81629697240 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81629697240's digits is 54
• More coming soon!