21379310

Names of 21379310

• Cardinal: 21379310 can be written as Twenty-one million, three hundred seventy-nine thousand, three hundred ten.

Scientific notation

• Scientific notation: 2.137931 × 10⁷

Factors of 21379310

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 2137938

Divisors of 21379310

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 5 10 2137931 4275862 10689655 21379310
• Sum of all divisors σ(n): 38482776
• Sum of proper divisors (its aliquot sum) s(n): 17103466
• 21379310 is a deficient number, because the sum of its proper divisors (17103466) is less than itself. Its deficiency is 4275844

Bases of 21379310

• Binary: 1010001100011100011101110₂
• Hexadecimal: 0x14638EE
• Base-36: CQ8DQ

Squares and roots of 21379310

• 21379310 squared (21379310²) is 457074896076100
• 21379310 cubed (21379310³) is 9771945896428725491000
• The square root of 21379310 is 4623.7765949491
• The cube root of 21379310 is 277.5436070313

Scales and comparisons

• 21,379,310 seconds is equal to 35 weeks, 2 days, 10 hours, 41 minutes, 50 seconds.
• To count from 1 to 21,379,310 would take you about four 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 21379310 cubic inches would be around 23.1 feet tall.

Recreational maths with 21379310

• 21379310 backwards is 01397312
• The number of decimal digits it has is: 8
• The sum of 21379310's digits is 26
• More coming soon!