20131021

Names of 20131021

• Cardinal: 20131021 can be written as Twenty million, one hundred thirty-one thousand and twenty-one.

Scientific notation

• Scientific notation: 2.0131021 × 10⁷

Factors of 20131021

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 300530

Divisors of 20131021

• Number of divisors d(n): 4
• Complete list of divisors:
  1 67 300463 20131021
• Sum of all divisors σ(n): 20431552
• Sum of proper divisors (its aliquot sum) s(n): 300531
• 20131021 is a deficient number, because the sum of its proper divisors (300531) is less than itself. Its deficiency is 19830490

Bases of 20131021

• Binary: 1001100110010110011001101₂
• Hexadecimal: 0x1332CCD
• Base-36: BZH71

Squares and roots of 20131021

• 20131021 squared (20131021²) is 405258006502441
• 20131021 cubed (20131021³) is 8158257439318776322261
• The square root of 20131021 is 4486.7606354697
• The cube root of 20131021 is 272.0332148381

Scales and comparisons

• 20,131,021 seconds is equal to 33 weeks, 1 day, 23 hours, 57 minutes, 1 second.
• To count from 1 to 20,131,021 would take you about forty-nine weeks!

  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 20131021 cubic inches would be around 22.7 feet tall.

Recreational maths with 20131021

• 20131021 backwards is 12013102
• The number of decimal digits it has is: 8
• The sum of 20131021's digits is 10
• More coming soon!