81310520304

Names of 81310520304

• Cardinal: 81310520304 can be written as Eighty-one billion, three hundred ten million, five hundred twenty thousand, three hundred four.

Scientific notation

• Scientific notation: 8.1310520304 × 10¹⁰

Factors of 81310520304

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 4542

Divisors of 81310520304

• Number of divisors d(n): 200
• Complete list of divisors:
  1 2 3 4 6 8 9 12 13 16 18 24 26 27 36 39 48 52 54 72 78 81 104 108 117 144 156 162 208 216 234 312 324 351 432 468 624 648 702 936 1053 1296 1404 1723 1872 2106 2801 2808 3446 4212 5169 5602 5616 6892 8403 8424 10338 11204 13784 15507 16806 16848 20676 22399 22408 25209 27568 31014 33612 36413 41352 44798 44816 46521 50418 62028 67197 67224 72826 75627 82704 89596 93042 100836 109239 124056 134394 134448 139563 145652 151254 179192 186084 201591 201672 218478 226881 248112 268788 279126 291304 302508 327717 358384 372168 403182 403344 436956 453762 537576 558252 582608 604773 605016 655434 744336 806364 873912 907524 983151 1075152 1116504 1209546 1210032 1310868 1612728 1747824 1814319 1815048 1966302 2233008 2419092 2621736 2949453 3225456 3628638 3630096 3932604 4826123 4838184 5243472 5898906 7257276 7865208 9652246 9676368 11797812 14478369 14514552 15730416 19304492 23595624 28956738 29029104 38608984 43435107 47191248 57913476 62739599 77217968 86870214 115826952 125479198 130305321 173740428 188218797 231653904 250958396 260610642 347480856 376437594 390915963 501916792 521221284 564656391 694961712 752875188 781831926 1003833584 1042442568 1129312782 1505750376 1563663852 1693969173 2084885136 2258625564 3011500752 3127327704 3387938346 4517251128 5081907519 6254655408 6775876692 9034502256 10163815038 13551753384 20327630076 27103506768 40655260152 81310520304
• Sum of all divisors σ(n): 253676649072
• Sum of proper divisors (its aliquot sum) s(n): 172366128768
• 81310520304 is an abundant number, because the sum of its proper divisors (172366128768) is greater than itself. Its abundance is 91055608464

Bases of 81310520304

• Binary: 1001011101110011111000001001111110000₂
• Hexadecimal: 0x12EE7C13F0
• Base-36: 11CQ6N00

Squares and roots of 81310520304

• 81310520304 squared (81310520304²) is 6611400712107196252416
• 81310520304 cubed (81310520304³) is 537576431839672239506583877054464
• The square root of 81310520304 is 285149.9961493951
• The cube root of 81310520304 is 4332.2706455321

Scales and comparisons

• 81,310,520,304 seconds is equal to 2,585 years, 21 weeks, 6 days, 23 hours, 38 minutes, 24 seconds.
• To count from 1 to 81,310,520,304 would take you about five thousand, one hundred seventy 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 81310520304 cubic inches would be around 361 feet tall.

Recreational maths with 81310520304

• 81310520304 backwards is 40302501318
• 81310520304 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81310520304's digits is 27
• More coming soon!