21408973308

Names of 21408973308

• Cardinal: 21408973308 can be written as Twenty-one billion, four hundred eight million, nine hundred seventy-three thousand, three hundred eight.

Scientific notation

• Scientific notation: 2.1408973308 × 10¹⁰

Factors of 21408973308

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 48981

Divisors of 21408973308

• Number of divisors d(n): 36
• Complete list of divisors:
  1 2 3 4 6 9 12 18 36 22259 26717 44518 53434 66777 80151 89036 106868 133554 160302 200331 240453 267108 320604 400662 480906 801324 961812 594693703 1189387406 1784081109 2378774812 3568162218 5352243327 7136324436 10704486654 21408973308
• Sum of all divisors σ(n): 54121583880
• Sum of proper divisors (its aliquot sum) s(n): 32712610572
• 21408973308 is an abundant number, because the sum of its proper divisors (32712610572) is greater than itself. Its abundance is 11303637264

Bases of 21408973308

• Binary: 10011111100000100110000000111111100₂
• Hexadecimal: 0x4FC1301FC
• Base-36: 9U2CLJ0

Squares and roots of 21408973308

• 21408973308 squared (21408973308²) is 458344138102656462864
• 21408973308 cubed (21408973308³) is 9812677418518037977349069234112
• The square root of 21408973308 is 146318.0553041899
• The cube root of 21408973308 is 2776.7190953177

Scales and comparisons

• 21,408,973,308 seconds is equal to 680 years, 38 weeks, 3 days, 1 hour, 1 minute, 48 seconds.
• To count from 1 to 21,408,973,308 would take you about one thousand, three hundred sixty-one 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 21408973308 cubic inches would be around 231.4 feet tall.

Recreational maths with 21408973308

• 21408973308 backwards is 80337980412
• The number of decimal digits it has is: 11
• The sum of 21408973308's digits is 45
• More coming soon!