20420447294142721

Names of 20420447294142721

• Cardinal: 20420447294142721 can be written as Twenty quadrillion, four hundred twenty trillion, four hundred forty-seven billion, two hundred ninety-four million, one hundred forty-two thousand, seven hundred twenty-one.

Scientific notation

• Scientific notation: 2.0420447294142721 × 10¹⁶

Factors of 20420447294142721

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 2911883591

Divisors of 20420447294142721

• Number of divisors d(n): 8
• Complete list of divisors:
  1 7 1002173 7015211 2910881411 20376169877 2917206756306103 20420447294142721
• Sum of all divisors σ(n): 23337677345517504
• Sum of proper divisors (its aliquot sum) s(n): 2917230051374783
• 20420447294142721 is a deficient number, because the sum of its proper divisors (2917230051374783) is less than itself. Its deficiency is 17503217242767938

Bases of 20420447294142721

• Binary: 1001000100011000100100111100011000111110011100100000001₂
• Hexadecimal: 0x488C49E31F3901
• Base-36: 5L2FZZALVK1

Squares and roots of 20420447294142721

• 20420447294142721 squared (20420447294142721²) is 416994667692860775752514317283841
• 20420447294142721 cubed (20420447294142721³) is 8515217633560621947301964586851242974253321071361
• The square root of 20420447294142721 is 142900130.4902928387
• The cube root of 20420447294142721 is 273330.7020934247

Scales and comparisons

• 20,420,447,294,142,721 seconds is equal to 649,307,059 years, 18 weeks, 6 days, 3 hours, 12 minutes, 1 second.
• To count from 1 to 20,420,447,294,142,721 would take you about one billion, nine hundred forty-seven million, nine hundred twenty-one thousand, one hundred seventy-eight 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 20420447294142721 cubic inches would be around 22777.6 feet tall.

Recreational maths with 20420447294142721

• 20420447294142721 backwards is 12724149274402402
• The number of decimal digits it has is: 17
• The sum of 20420447294142721's digits is 55
• More coming soon!