81820841984

Names of 81820841984

• Cardinal: 81820841984 can be written as Eighty-one billion, eight hundred twenty million, eight hundred forty-one thousand, nine hundred eighty-four.

Scientific notation

• Scientific notation: 8.1820841984 × 10¹⁰

Factors of 81820841984

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 4979

Divisors of 81820841984

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 4 7 8 14 16 28 32 56 64 112 128 224 256 448 512 896 1024 1792 1801 2048 3169 3584 3602 6338 7168 7204 12607 12676 14336 14408 22183 25214 25352 28816 44366 50428 50704 57632 88732 100856 101408 115264 177464 201712 202816 230528 354928 403424 405632 461056 709856 806848 811264 922112 1419712 1613696 1622528 1844224 2839424 3227392 3245056 3688448 5678848 5707369 6454784 6490112 11357696 11414738 12909568 22715392 22829476 25819136 39951583 45430784 45658952 79903166 91317904 159806332 182635808 319612664 365271616 639225328 730543232 1278450656 1461086464 2556901312 2922172928 5113802624 5844345856 10227605248 11688691712 20455210496 40910420992 81820841984
• Sum of all divisors σ(n): 187136258400
• Sum of proper divisors (its aliquot sum) s(n): 105315416416
• 81820841984 is an abundant number, because the sum of its proper divisors (105315416416) is greater than itself. Its abundance is 23494574432

Bases of 81820841984

• Binary: 1001100001100111001101111100000000000₂
• Hexadecimal: 0x130CE6F800
• Base-36: 11L60LQ8

Squares and roots of 81820841984

• 81820841984 squared (81820841984²) is 6694650182970697056256
• 81820841984 cubed (81820841984³) is 547761914759002091542256134651904
• The square root of 81820841984 is 286043.4267449613
• The cube root of 81820841984 is 4341.3151596223

Scales and comparisons

• 81,820,841,984 seconds is equal to 2,601 years, 33 weeks, 5 days, 11 hours, 39 minutes, 44 seconds.
• To count from 1 to 81,820,841,984 would take you about five thousand, two hundred three 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 81820841984 cubic inches would be around 361.8 feet tall.

Recreational maths with 81820841984

• 81820841984 backwards is 48914802818
• The number of decimal digits it has is: 11
• The sum of 81820841984's digits is 53
• More coming soon!