21375971

Names of 21375971

• Cardinal: 21375971 can be written as Twenty-one million, three hundred seventy-five thousand, nine hundred seventy-one.

Scientific notation

• Scientific notation: 2.1375971 × 10⁷

Factors of 21375971

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21375971

Divisors of 21375971

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21375971
• Sum of all divisors σ(n): 21375972
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21375971 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21375970

Bases of 21375971

• Binary: 1010001100010101111100011₂
• Hexadecimal: 0x1462BE3
• Base-36: CQ5SZ

Squares and roots of 21375971

• 21375971 squared (21375971²) is 456932136192841
• 21375971 cubed (21375971³) is 9767368092226219623611
• The square root of 21375971 is 4623.4155123675
• The cube root of 21375971 is 277.5291574481

Scales and comparisons

• 21,375,971 seconds is equal to 35 weeks, 2 days, 9 hours, 46 minutes, 11 seconds.
• To count from 1 to 21,375,971 would take you about two 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 21375971 cubic inches would be around 23.1 feet tall.

Recreational maths with 21375971

• 21375971 backwards is 17957312
• The number of decimal digits it has is: 8
• The sum of 21375971's digits is 35
• More coming soon!