21399673429

Names of 21399673429

• Cardinal: 21399673429 can be written as Twenty-one billion, three hundred ninety-nine million, six hundred seventy-three thousand, four hundred twenty-nine.

Scientific notation

• Scientific notation: 2.1399673429 × 10¹⁰

Factors of 21399673429

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 573770

Divisors of 21399673429

• Number of divisors d(n): 4
• Complete list of divisors:
  1 40099 533671 21399673429
• Sum of all divisors σ(n): 21400247200
• Sum of proper divisors (its aliquot sum) s(n): 573771
• 21399673429 is a deficient number, because the sum of its proper divisors (573771) is less than itself. Its deficiency is 21399099658

Bases of 21399673429

• Binary: 10011111011100001010001101001010101₂
• Hexadecimal: 0x4FB851A55
• Base-36: 9TWT9P1

Squares and roots of 21399673429

• 21399673429 squared (21399673429²) is 457946022867848618041
• 21399673429 cubed (21399673429³) is 9799895337481326449886357732589
• The square root of 21399673429 is 146286.2721823207
• The cube root of 21399673429 is 2776.3169759001

Scales and comparisons

• 21,399,673,429 seconds is equal to 680 years, 23 weeks, 9 hours, 43 minutes, 49 seconds.
• To count from 1 to 21,399,673,429 would take you about one thousand, three hundred sixty 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 21399673429 cubic inches would be around 231.4 feet tall.

Recreational maths with 21399673429

• 21399673429 backwards is 92437699312
• The number of decimal digits it has is: 11
• The sum of 21399673429's digits is 55
• More coming soon!