21372938

Names of 21372938

• Cardinal: 21372938 can be written as Twenty-one million, three hundred seventy-two thousand, nine hundred thirty-eight.

Scientific notation

• Scientific notation: 2.1372938 × 10⁷

Factors of 21372938

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 98152

Divisors of 21372938

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 109 218 98041 196082 10686469 21372938
• Sum of all divisors σ(n): 32353860
• Sum of proper divisors (its aliquot sum) s(n): 10980922
• 21372938 is a deficient number, because the sum of its proper divisors (10980922) is less than itself. Its deficiency is 10392016

Bases of 21372938

• Binary: 1010001100010000000001010₂
• Hexadecimal: 0x146200A
• Base-36: CQ3GQ

Squares and roots of 21372938

• 21372938 squared (21372938²) is 456802478751844
• 21372938 cubed (21372938³) is 9763211056609479197672
• The square root of 21372938 is 4623.0874964681
• The cube root of 21372938 is 277.5160307813

Scales and comparisons

• 21,372,938 seconds is equal to 35 weeks, 2 days, 8 hours, 55 minutes, 38 seconds.
• To count from 1 to 21,372,938 would take you about twenty-three minutes!

  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 21372938 cubic inches would be around 23.1 feet tall.

Recreational maths with 21372938

• 21372938 backwards is 83927312
• The number of decimal digits it has is: 8
• The sum of 21372938's digits is 35
• More coming soon!