81324941490

Names of 81324941490

• Cardinal: 81324941490 can be written as Eighty-one billion, three hundred twenty-four million, nine hundred forty-one thousand, four hundred ninety.

Scientific notation

• Scientific notation: 8.132494149 × 10¹⁰

Factors of 81324941490

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1148

Divisors of 81324941490

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 5 6 9 10 13 15 18 26 27 30 39 45 54 65 78 90 117 127 130 135 195 234 241 254 270 351 381 390 482 585 635 702 723 757 762 1143 1170 1205 1270 1446 1514 1651 1755 1905 2169 2271 2286 2410 3133 3302 3429 3510 3615 3785 3810 4338 4542 4953 5715 6266 6507 6813 6858 7230 7570 8255 9399 9841 9906 10845 11355 11430 13014 13626 14859 15665 16510 17145 18798 19682 20439 21690 22710 24765 28197 29523 29718 30607 31330 32535 34065 34290 40878 44577 46995 49205 49530 56394 59046 61214 65070 68130 74295 84591 88569 89154 91821 93990 96139 98410 102195 140985 147615 148590 153035 169182 177138 182437 183642 192278 204390 222885 265707 275463 281970 288417 295230 306070 364874 397891 422955 442845 445770 459105 480695 531414 547311 550926 576834 795782 826389 845910 865251 885690 912185 918210 961390 1094622 1193673 1249807 1328535 1377315 1442085 1641933 1652778 1730502 1824370 1989455 2371681 2387346 2499614 2595753 2657070 2736555 2754630 2884170 3283866 3581019 3749421 3978910 4131945 4326255 4743362 4925799 5191506 5473110 5968365 6249035 7115043 7162038 7498842 8209665 8263890 8652510 9851598 10743057 11248263 11858405 11936730 12498070 12978765 14230086 16419330 17905095 18747105 21345129 21486114 22496526 23169499 23716810 24628995 25957530 33744789 35575215 35810190 37494210 42690258 46338998 49257990 53715285 56241315 64035387 67489578 69508497 71150430 106725645 107430570 112482630 115847495 128070774 139016994 168723945 208525491 213451290 231694990 301203487 320176935 337447890 347542485 417050982 602406974 625576473 640353870 695084970 903610461 1042627455 1251152946 1506017435 1807220922 2085254910 2710831383 3012034870 3127882365 4518052305 5421662766 6255764730 8132494149 9036104610 13554156915 16264988298 27108313830 40662470745 81324941490
• Sum of all divisors σ(n): 236676464640
• Sum of proper divisors (its aliquot sum) s(n): 155351523150
• 81324941490 is an abundant number, because the sum of its proper divisors (155351523150) is greater than itself. Its abundance is 74026581660

Bases of 81324941490

• Binary: 1001011101111010110000010000010110010₂
• Hexadecimal: 0x12EF5820B2
• Base-36: 11CYRQGI

Squares and roots of 81324941490

• 81324941490 squared (81324941490²) is 6613746108351923420100
• 81324941490 cubed (81324941490³) is 537862515291435372468593189949000
• The square root of 81324941490 is 285175.2820459725
• The cube root of 81324941490 is 4332.5267533817

Scales and comparisons

• 81,324,941,490 seconds is equal to 2,585 years, 45 weeks, 5 days, 21 hours, 31 minutes, 30 seconds.
• To count from 1 to 81,324,941,490 would take you about five thousand, one hundred seventy-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 81324941490 cubic inches would be around 361 feet tall.

Recreational maths with 81324941490

• 81324941490 backwards is 09414942318
• 81324941490 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81324941490's digits is 45
• More coming soon!