21033667431

Names of 21033667431

• Cardinal: 21033667431 can be written as Twenty-one billion, thirty-three million, six hundred sixty-seven thousand, four hundred thirty-one.

Scientific notation

• Scientific notation: 2.1033667431 × 10¹⁰

Factors of 21033667431

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1642

Divisors of 21033667431

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 7 9 21 31 49 63 93 147 217 279 441 651 961 1519 1601 1953 2883 4557 4803 6727 8649 11207 13671 14409 20181 29791 33621 47089 49631 60543 78449 89373 100863 141267 148893 208537 235347 268119 347417 423801 446679 625611 706041 1042251 1459759 1538561 1876833 2431919 3126753 4379277 4615683 7295757 10769927 13137831 13847049 21887271 32309781 47695391 75389489 96929343 143086173 226168467 333867737 429258519 678505401 1001603211 2337074159 3004809633 7011222477 21033667431
• Sum of all divisors σ(n): 36543132288
• Sum of proper divisors (its aliquot sum) s(n): 15509464857
• 21033667431 is a deficient number, because the sum of its proper divisors (15509464857) is less than itself. Its deficiency is 5524202574

Bases of 21033667431

• Binary: 10011100101101101000100101101100111₂
• Hexadecimal: 0x4E5B44B67
• Base-36: 9NUWHNR

Squares and roots of 21033667431

• 21033667431 squared (21033667431²) is 442415165597910139761
• 21033667431 cubed (21033667431³) is 9305613459617234148355603823991
• The square root of 21033667431 is 145029.8846134825
• The cube root of 21033667431 is 2760.3977683645

Scales and comparisons

• 21,033,667,431 seconds is equal to 668 years, 41 weeks, 6 days, 5 hours, 23 minutes, 51 seconds.
• To count from 1 to 21,033,667,431 would take you about one thousand, three hundred thirty-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 21033667431 cubic inches would be around 230 feet tall.

Recreational maths with 21033667431

• 21033667431 backwards is 13476633012
• The number of decimal digits it has is: 11
• The sum of 21033667431's digits is 36
• More coming soon!