21398011

Names of 21398011

• Cardinal: 21398011 can be written as Twenty-one million, three hundred ninety-eight thousand and eleven.

Scientific notation

• Scientific notation: 2.1398011 × 10⁷

Factors of 21398011

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 12340

Divisors of 21398011

• Number of divisors d(n): 4
• Complete list of divisors:
  1 2087 10253 21398011
• Sum of all divisors σ(n): 21410352
• Sum of proper divisors (its aliquot sum) s(n): 12341
• 21398011 is a deficient number, because the sum of its proper divisors (12341) is less than itself. Its deficiency is 21385670

Bases of 21398011

• Binary: 1010001101000000111111011₂
• Hexadecimal: 0x14681FB
• Base-36: CQMT7

Squares and roots of 21398011

• 21398011 squared (21398011²) is 457874874756121
• 21398011 cubed (21398011³) is 9797611606655099475331
• The square root of 21398011 is 4625.7984175707
• The cube root of 21398011 is 277.6245081511

Scales and comparisons

• 21,398,011 seconds is equal to 35 weeks, 2 days, 15 hours, 53 minutes, 31 seconds.
• To count from 1 to 21,398,011 would take you about eleven hours!

  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 21398011 cubic inches would be around 23.1 feet tall.

Recreational maths with 21398011

• 21398011 backwards is 11089312
• The number of decimal digits it has is: 8
• The sum of 21398011's digits is 25
• More coming soon!