21490973604

Names of 21490973604

• Cardinal: 21490973604 can be written as Twenty-one billion, four hundred ninety million, nine hundred seventy-three thousand, six hundred four.

Scientific notation

• Scientific notation: 2.1490973604 × 10¹⁰

Factors of 21490973604

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 519

Divisors of 21490973604

• Number of divisors d(n): 81
• Complete list of divisors:
  1 2 3 4 6 9 12 18 36 53 106 159 212 318 461 477 636 922 954 1383 1844 1908 2766 2809 4149 5532 5618 8298 8427 11236 16596 16854 24433 25281 33708 48866 50562 73299 97732 101124 146598 212521 219897 293196 425042 439794 637563 850084 879588 1275126 1294949 1912689 2550252 2589898 3825378 3884847 5179796 7650756 7769694 11263613 11654541 15539388 22527226 23309082 33790839 45054452 46618164 67581678 101372517 135163356 202745034 405490068 596971489 1193942978 1790914467 2387885956 3581828934 5372743401 7163657868 10745486802 21490973604
• Sum of all divisors σ(n): 55489099939
• Sum of proper divisors (its aliquot sum) s(n): 33998126335
• 21490973604 is an abundant number, because the sum of its proper divisors (33998126335) is greater than itself. Its abundance is 12507152731

Bases of 21490973604

• Binary: 10100000000111101100011101110100100₂
• Hexadecimal: 0x500F63BA4
• Base-36: 9VF65D0

Squares and roots of 21490973604

• 21490973604 squared (21490973604²) is 461861946447824748816
• 21490973604 cubed (21490973604³) is 9925862899802263240022586252864
• 21490973604 is a perfect square number. Its square root is 146598
• The cube root of 21490973604 is 2780.2596933185

Scales and comparisons

• 21,490,973,604 seconds is equal to 683 years, 18 weeks, 2 hours, 53 minutes, 24 seconds.
• To count from 1 to 21,490,973,604 would take you about one thousand, three hundred sixty-six 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 21490973604 cubic inches would be around 231.7 feet tall.

Recreational maths with 21490973604

• 21490973604 backwards is 40637909412
• The number of decimal digits it has is: 11
• The sum of 21490973604's digits is 45
• More coming soon!