21347928739215

Names of 21347928739215

• Cardinal: 21347928739215 can be written as Twenty-one trillion, three hundred forty-seven billion, nine hundred twenty-eight million, seven hundred thirty-nine thousand, two hundred fifteen.

Scientific notation

• Scientific notation: 2.1347928739215 × 10¹³

Factors of 21347928739215

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 513974541

Divisors of 21347928739215

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 5 9 13 15 39 45 65 71 117 195 213 355 585 639 923 1065 2769 3195 4615 8307 13845 41535 513974449 1541923347 2569872245 4625770041 6681667837 7709616735 20045003511 23128850205 33408339185 36492185879 60135010533 100225017555 109476557637 182460929395 300675052665 328429672911 474398416427 547382788185 1423195249281 1642148364555 2371992082135 4269585747843 7115976246405 21347928739215
• Sum of all divisors σ(n): 40410727156800
• Sum of proper divisors (its aliquot sum) s(n): 19062798417585
• 21347928739215 is a deficient number, because the sum of its proper divisors (19062798417585) is less than itself. Its deficiency is 2285130321630

Bases of 21347928739215

• Binary: 100110110101001110011101101011000110110001111₂
• Hexadecimal: 0x136A73B58D8F
• Base-36: 7KF3PL11R

Squares and roots of 21347928739215

• 21347928739215 squared (21347928739215²) is 455734061454601739478816225
• 21347928739215 cubed (21347928739215³) is 9728978267965867441231951145364935763375
• The square root of 21347928739215 is 4620381.8824005229
• The cube root of 21347928739215 is 27740.7744629163

Scales and comparisons

• 21,347,928,739,215 seconds is equal to 678,798 years, 5 weeks, 1 day, 13 hours, 20 minutes, 15 seconds.
• To count from 1 to 21,347,928,739,215 would take you about one million, six hundred ninety-six thousand, nine hundred ninety-five 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 21347928739215 cubic inches would be around 2311.7 feet tall.

Recreational maths with 21347928739215

• 21347928739215 backwards is 51293782974312
• The number of decimal digits it has is: 14
• The sum of 21347928739215's digits is 63
• More coming soon!