820400398312

Names of 820400398312

• Cardinal: 820400398312 can be written as Eight hundred twenty billion, four hundred million, three hundred ninety-eight thousand, three hundred twelve.

Scientific notation

• Scientific notation: 8.20400398312 × 10¹¹

Factors of 820400398312

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 141558

Divisors of 820400398312

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 8 11 22 44 88 127 254 508 521 1016 1042 1397 2084 2794 4168 5588 5731 11176 11462 22924 45848 66167 132334 140897 264668 281794 529336 563588 727837 1127176 1455674 1549867 2911348 3099734 5822696 6199468 12398936 17893919 35787838 71575676 73407337 143151352 146814674 196833109 293629348 393666218 587258696 787332436 807480707 1574664872 1614961414 3229922828 6459845656 9322731799 18645463598 37290927196 74581854392 102550049789 205100099578 410200199156 820400398312
• Sum of all divisors σ(n): 1694563338240
• Sum of proper divisors (its aliquot sum) s(n): 874162939928
• 820400398312 is an abundant number, because the sum of its proper divisors (874162939928) is greater than itself. Its abundance is 53762541616

Bases of 820400398312

• Binary: 1011111100000011101011001001111111101000₂
• Hexadecimal: 0xBF03AC9FE8
• Base-36: AGVX7QP4

Squares and roots of 820400398312

• 820400398312 squared (820400398312²) is 673056813550488252449344
• 820400398312 cubed (820400398312³) is 552176077923426081231518627203107328
• The square root of 820400398312 is 905759.5698153015
• The cube root of 820400398312 is 9361.4248259821

Scales and comparisons

• 820,400,398,312 seconds is equal to 26,086 years, 10 weeks, 23 hours, 31 minutes, 52 seconds.
• To count from 1 to 820,400,398,312 would take you about fifty-two thousand, one hundred seventy-two 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 820400398312 cubic inches would be around 780.1 feet tall.

Recreational maths with 820400398312

• 820400398312 backwards is 213893004028
• The number of decimal digits it has is: 12
• The sum of 820400398312's digits is 40
• More coming soon!