21389849692638

Names of 21389849692638

• Cardinal: 21389849692638 can be written as Twenty-one trillion, three hundred eighty-nine billion, eight hundred forty-nine million, six hundred ninety-two thousand, six hundred thirty-eight.

Scientific notation

• Scientific notation: 2.1389849692638 × 10¹³

Factors of 21389849692638

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 9670952

Divisors of 21389849692638

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 3 6 7 14 21 42 52951 105902 158853 317706 370657 741314 1111971 2223942 9617989 19235978 28853967 57707934 67325923 134651846 201977769 403955538 509282135539 1018564271078 1527846406617 3055692813234 3564974948773 7129949897546 10694924846319 21389849692638
• Sum of all divisors σ(n): 48892013422080
• Sum of proper divisors (its aliquot sum) s(n): 27502163729442
• 21389849692638 is an abundant number, because the sum of its proper divisors (27502163729442) is greater than itself. Its abundance is 6112314036804

Bases of 21389849692638

• Binary: 100110111010000110110011001001000100111011110₂
• Hexadecimal: 0x1374366489DE
• Base-36: 7KYD08JQ6

Squares and roots of 21389849692638

• 21389849692638 squared (21389849692638²) is 457525669873645943071399044
• 21389849692638 cubed (21389849692638³) is 9786405309120800731702200486992047038072
• The square root of 21389849692638 is 4624916.1822283871
• The cube root of 21389849692638 is 27758.9207875359

Scales and comparisons

• 21,389,849,692,638 seconds is equal to 680,131 years, 2 weeks, 6 days, 18 hours, 37 minutes, 18 seconds.
• To count from 1 to 21,389,849,692,638 would take you about one million, seven hundred thousand, three hundred twenty-seven 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 21389849692638 cubic inches would be around 2313.2 feet tall.

Recreational maths with 21389849692638

• 21389849692638 backwards is 83629694898312
• The number of decimal digits it has is: 14
• The sum of 21389849692638's digits is 78
• More coming soon!