21097031

Names of 21097031

• Cardinal: 21097031 can be written as Twenty-one million, ninety-seven thousand and thirty-one.

Scientific notation

• Scientific notation: 2.1097031 × 10⁷

Factors of 21097031

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 448920

Divisors of 21097031

• Number of divisors d(n): 4
• Complete list of divisors:
  1 47 448873 21097031
• Sum of all divisors σ(n): 21545952
• Sum of proper divisors (its aliquot sum) s(n): 448921
• 21097031 is a deficient number, because the sum of its proper divisors (448921) is less than itself. Its deficiency is 20648110

Bases of 21097031

• Binary: 1010000011110101001000111₂
• Hexadecimal: 0x141EA47
• Base-36: CK6KN

Squares and roots of 21097031

• 21097031 squared (21097031²) is 445084717014961
• 21097031 cubed (21097031³) is 9389966072490859680791
• The square root of 21097031 is 4593.1504438675
• The cube root of 21097031 is 276.3166873529

Scales and comparisons

• 21,097,031 seconds is equal to 34 weeks, 6 days, 4 hours, 17 minutes, 11 seconds.
• To count from 1 to 21,097,031 would take you about two days!

  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 21097031 cubic inches would be around 23 feet tall.

Recreational maths with 21097031

• 21097031 backwards is 13079012
• The number of decimal digits it has is: 8
• The sum of 21097031's digits is 23
• More coming soon!