20391040734736

Names of 20391040734736

• Cardinal: 20391040734736 can be written as Twenty trillion, three hundred ninety-one billion, forty million, seven hundred thirty-four thousand, seven hundred thirty-six.

Scientific notation

• Scientific notation: 2.0391040734736 × 10¹³

Factors of 20391040734736

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 23048

Divisors of 20391040734736

• Number of divisors d(n): 75
• Complete list of divisors:
  1 2 4 7 8 14 16 28 49 56 98 112 196 343 392 686 784 1372 2401 2744 4802 5488 9604 19208 23039 38416 46078 92156 161273 184312 322546 368624 645092 1128911 1290184 2257822 2580368 4515644 7902377 9031288 15804754 18062576 31609508 55316639 63219016 110633278 126438032 221266556 442533112 530795521 885066224 1061591042 2123182084 3715568647 4246364168 7431137294 8492728336 14862274588 26008980529 29724549176 52017961058 59449098352 104035922116 182062863703 208071844232 364125727406 416143688464 728251454812 1274440045921 1456502909624 2548880091842 2913005819248 5097760183684 10195520367368 20391040734736
• Sum of all divisors σ(n): 46091506470191
• Sum of proper divisors (its aliquot sum) s(n): 25700465735455
• 20391040734736 is an abundant number, because the sum of its proper divisors (25700465735455) is greater than itself. Its abundance is 5309425000719

Bases of 20391040734736

• Binary: 100101000101110101000101111010101011000010000₂
• Hexadecimal: 0x128BA8BD5610
• Base-36: 787IJ67F4

Squares and roots of 20391040734736

• 20391040734736 squared (20391040734736²) is 415794542245662870716989696
• 20391040734736 cubed (20391040734736³) is 8478483448212220214714320549841981280256
• 20391040734736 is a perfect square number. Its square root is 4515644
• The cube root of 20391040734736 is 27319.9435349649

Scales and comparisons

• 20,391,040,734,736 seconds is equal to 648,372 years, 1 week, 21 hours, 52 minutes, 16 seconds.
• To count from 1 to 20,391,040,734,736 would take you about one million, six hundred twenty thousand, nine hundred thirty 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 20391040734736 cubic inches would be around 2276.7 feet tall.

Recreational maths with 20391040734736

• 20391040734736 backwards is 63743704019302
• 20391040734736 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 20391040734736's digits is 49
• More coming soon!