21990071

Names of 21990071

• Cardinal: 21990071 can be written as Twenty-one million, nine hundred ninety thousand and seventy-one.

Scientific notation

• Scientific notation: 2.1990071 × 10⁷

Factors of 21990071

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 9745

Divisors of 21990071

• Number of divisors d(n): 8
• Complete list of divisors:
  1 43 53 2279 9649 414907 511397 21990071
• Sum of all divisors σ(n): 22928400
• Sum of proper divisors (its aliquot sum) s(n): 938329
• 21990071 is a deficient number, because the sum of its proper divisors (938329) is less than itself. Its deficiency is 21051742

Bases of 21990071

• Binary: 1010011111000101010110111₂
• Hexadecimal: 0x14F8AB7
• Base-36: D3BNB

Squares and roots of 21990071

• 21990071 squared (21990071²) is 483563222585041
• 21990071 cubed (21990071³) is 10633589597633855127911
• The square root of 21990071 is 4689.3572054173
• The cube root of 21990071 is 280.1617730125

Scales and comparisons

• 21,990,071 seconds is equal to 36 weeks, 2 days, 12 hours, 21 minutes, 11 seconds.
• To count from 1 to 21,990,071 would take you about two weeks!

  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 21990071 cubic inches would be around 23.3 feet tall.

Recreational maths with 21990071

• 21990071 backwards is 17009912
• The number of decimal digits it has is: 8
• The sum of 21990071's digits is 29
• More coming soon!