81930796920

Names of 81930796920

• Cardinal: 81930796920 can be written as Eighty-one billion, nine hundred thirty million, seven hundred ninety-six thousand, nine hundred twenty.

Scientific notation

• Scientific notation: 8.193079692 × 10¹⁰

Factors of 81930796920

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 365

Divisors of 81930796920

• Number of divisors d(n): 720
• Complete list of divisors:
  1 2 3 4 5 6 7 8 9 10 12 14 15 18 20 21 24 27 28 30 35 36 40 41 42 45 49 54 56 60 63 70 72 81 82 84 90 98 105 108 120 123 126 135 140 147 162 164 168 180 189 196 205 210 216 245 246 252 270 280 287 294 307 315 324 328 360 369 378 392 405 410 420 441 490 492 504 540 567 574 588 614 615 630 648 735 738 756 810 820 840 861 882 921 945 980 984 1080 1107 1134 1148 1176 1228 1230 1260 1323 1435 1470 1476 1512 1535 1620 1640 1681 1722 1764 1842 1845 1890 1960 2009 2149 2205 2214 2268 2296 2456 2460 2520 2583 2646 2763 2835 2870 2940 2952 3070 3240 3321 3362 3444 3528 3684 3690 3780 3969 4018 4298 4305 4410 4428 4536 4605 4920 5043 5166 5292 5526 5535 5670 5740 5880 6027 6140 6447 6615 6642 6724 6888 7368 7380 7560 7749 7938 8036 8289 8405 8596 8610 8820 8856 9210 10045 10086 10332 10584 10745 11052 11070 11340 11480 11767 12054 12280 12587 12894 12915 13230 13284 13448 13815 14760 15043 15129 15498 15876 16072 16578 16605 16810 17192 17220 17640 18081 18420 19341 19845 20090 20172 20664 21490 22104 22140 22680 23247 23534 24108 24867 25174 25215 25788 25830 26460 26568 27630 30086 30135 30258 30996 31752 32235 33156 33210 33620 34440 35301 36162 36840 37761 38682 38745 39690 40180 40344 41445 42980 44280 45129 45387 46494 47068 48216 49734 50348 50430 51576 51660 52920 54243 55260 58023 58835 60172 60270 60516 61992 62935 64470 66312 66420 67240 70602 72324 75215 75522 75645 77364 77490 79380 80360 82369 82890 85960 88109 90258 90405 90774 92988 94136 96705 99468 100696 100860 103320 105903 108486 110520 113283 116046 116235 117670 120344 120540 121032 124335 125870 128940 132840 135387 136161 141204 144648 150430 151044 151290 154728 154980 158760 162729 164738 165780 174069 176218 176505 180516 180810 181548 185976 188805 193410 198936 201720 211806 216972 225645 226566 226935 232092 232470 235340 241080 247107 248670 251740 257880 264327 270774 271215 272322 282408 290115 300860 302088 302580 309960 317709 325458 329476 331560 339849 348138 352436 353010 361032 361620 363096 377610 386820 406161 411845 423612 433944 440545 451290 453132 453870 464184 464940 470680 494214 497340 503480 516067 528654 529515 541548 542430 544644 566415 580230 601720 605160 616763 635418 650916 658952 676935 679698 680805 696276 704872 706020 723240 741321 755220 773640 792981 812322 813645 823690 847224 870345 881090 902580 906264 907740 929880 953127 988428 994680 1019547 1032134 1057308 1059030 1083096 1084860 1089288 1132830 1160460 1218483 1233526 1235535 1270836 1301832 1321635 1353870 1359396 1361610 1392552 1412040 1482642 1510440 1548201 1585962 1588545 1624644 1627290 1647380 1699245 1740690 1762180 1805160 1815480 1850289 1906254 1976856 2030805 2039094 2064268 2114616 2118060 2169720 2223963 2265660 2320920 2378943 2436966 2467052 2471070 2541672 2580335 2643270 2707740 2718792 2723220 2965284 3083815 3096402 3171924 3177090 3249288 3254580 3294760 3398490 3481380 3524360 3612469 3700578 3706605 3812508 3964905 4061610 4078188 4128536 4236120 4447926 4531320 4644603 4757886 4765635 4873932 4934104 4942140 5097735 5160670 5286540 5415480 5446440 5550867 5930568 6092415 6167630 6192804 6343848 6354180 6509160 6671889 6796980 6962760 7136829 7224938 7401156 7413210 7625016 7741005 7929810 8123220 8156376 8895852 9251445 9289206 9515772 9531270 9747864 9884280 10195470 10321340 10573080 10837407 11101734 11119815 11894715 12184830 12335260 12385608 12708360 13343778 13593960 13933809 14273658 14449876 14802312 14826420 15482010 15859620 16246440 16652601 17791704 18062345 18502890 18578412 19031544 19062540 20390940 20642680 21674814 22203468 22239630 23223015 23789430 24369660 24670520 25287283 26687556 27754335 27867618 28547316 28899752 29652840 30964020 31719240 32512221 33305202 33359445 35684145 36124690 37005780 37156824 38125080 40781880 41801427 43349628 44406936 44479260 46446030 47578860 48739320 49957803 50574566 53375112 54187035 55508670 55735236 57094632 61928040 65024442 66610404 66718890 69669045 71368290 72249380 74011560 75861849 83263005 83602854 86699256 88958520 92892060 95157720 97536663 99915606 101149132 108374070 111017340 111470472 126436415 130048884 133220808 133437780 139338090 142736580 144498760 151723698 162561105 166526010 167205708 185784120 195073326 199831212 202298264 209007135 216748140 222034680 227585547 249789015 252872830 260097768 266875560 278676180 285473160 292609989 303447396 325122210 333052020 334411416 379309245 390146652 399662424 418014270 433496280 455171094 487683315 499578030 505745660 557352360 585219978 606894792 650244420 666104040 682756641 758618490 780293304 836028540 910342188 975366630 999156060 1011491320 1137927735 1170439956 1300488840 1365513282 1463049945 1517236980 1672057080 1820684376 1950733260 1998312120 2048269923 2275855470 2340879912 2731026564 2926099890 3034473960 3413783205 3901466520 4096539846 4551710940 5462053128 5852199780 6827566410 8193079692 9103421880 10241349615 11704399560 13655132820 16386159384 20482699230 27310265640 40965398460 81930796920
• Sum of all divisors σ(n): 329411479320
• Sum of proper divisors (its aliquot sum) s(n): 247480682400
• 81930796920 is an abundant number, because the sum of its proper divisors (247480682400) is greater than itself. Its abundance is 165549885480

Bases of 81930796920

• Binary: 1001100010011011101001011111101111000₂
• Hexadecimal: 0x131374BF78
• Base-36: 11MZHBI0

Squares and roots of 81930796920

• 81930796920 squared (81930796920²) is 6712655483946281486400
• 81930796920 cubed (81930796920³) is 549973213249127108651394141888000
• The square root of 81930796920 is 286235.5619415589
• The cube root of 81930796920 is 4343.2589812289

Scales and comparisons

• 81,930,796,920 seconds is equal to 2,605 years, 7 weeks, 4 days, 2 hours, 42 minutes.
• To count from 1 to 81,930,796,920 would take you about five thousand, two hundred ten 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 81930796920 cubic inches would be around 361.9 feet tall.

Recreational maths with 81930796920

• 81930796920 backwards is 02969703918
• 81930796920 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81930796920's digits is 54
• More coming soon!