81324970380

Names of 81324970380

• Cardinal: 81324970380 can be written as Eighty-one billion, three hundred twenty-four million, nine hundred seventy thousand, three hundred eighty.

Scientific notation

• Scientific notation: 8.132497038 × 10¹⁰

Factors of 81324970380

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 15144

Divisors of 81324970380

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 81 90 108 135 162 180 243 270 324 405 486 540 810 972 1201 1215 1620 2402 2430 3603 4804 4860 6005 7206 10809 12010 13933 14412 18015 21618 24020 27866 32427 36030 41799 43236 54045 55732 64854 69665 72060 83598 97281 108090 125397 129708 139330 162135 167196 194562 208995 216180 250794 278660 291843 324270 376191 389124 417990 486405 501588 583686 626985 648540 752382 835980 972810 1128573 1167372 1253970 1459215 1504764 1880955 1945620 2257146 2507940 2918430 3385719 3761910 4514292 5642865 5836860 6771438 7523820 11285730 13542876 16733533 16928595 22571460 33467066 33857190 50200599 66934132 67714380 83667665 100401198 150601797 167335330 200802396 251002995 301203594 334670660 451805391 502005990 602407188 753008985 903610782 1004011980 1355416173 1506017970 1807221564 2259026955 2710832346 3012035940 4066248519 4518053910 5421664692 6777080865 8132497038 9036107820 13554161730 16264994076 20331242595 27108323460 40662485190 81324970380
• Sum of all divisors σ(n): 256053636384
• Sum of proper divisors (its aliquot sum) s(n): 174728666004
• 81324970380 is an abundant number, because the sum of its proper divisors (174728666004) is greater than itself. Its abundance is 93403695624

Bases of 81324970380

• Binary: 1001011101111010110001001000110001100₂
• Hexadecimal: 0x12EF58918C
• Base-36: 11CYSCR0

Squares and roots of 81324970380

• 81324970380 squared (81324970380²) is 6613750807307877344400
• 81324970380 cubed (81324970380³) is 537863088505014212574003058872000
• The square root of 81324970380 is 285175.3326990257
• The cube root of 81324970380 is 4332.5272664131

Scales and comparisons

• 81,324,970,380 seconds is equal to 2,585 years, 45 weeks, 6 days, 5 hours, 33 minutes.
• To count from 1 to 81,324,970,380 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 81324970380 cubic inches would be around 361 feet tall.

Recreational maths with 81324970380

• 81324970380 backwards is 08307942318
• 81324970380 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81324970380's digits is 45
• More coming soon!