21025997

Names of 21025997

• Cardinal: 21025997 can be written as Twenty-one million, twenty-five thousand, nine hundred ninety-seven.

Scientific notation

• Scientific notation: 2.1025997 × 10⁷

Factors of 21025997

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 40878

Divisors of 21025997

• Number of divisors d(n): 4
• Complete list of divisors:
  1 521 40357 21025997
• Sum of all divisors σ(n): 21066876
• Sum of proper divisors (its aliquot sum) s(n): 40879
• 21025997 is a deficient number, because the sum of its proper divisors (40879) is less than itself. Its deficiency is 20985118

Bases of 21025997

• Binary: 1010000001101010011001101₂
• Hexadecimal: 0x140D4CD
• Base-36: CINRH

Squares and roots of 21025997

• 21025997 squared (21025997²) is 442092549844009
• 21025997 cubed (21025997³) is 9295436626742483701973
• The square root of 21025997 is 4585.4113228803
• The cube root of 21025997 is 276.0062179163

Scales and comparisons

• 21,025,997 seconds is equal to 34 weeks, 5 days, 8 hours, 33 minutes, 17 seconds.
• To count from 1 to 21,025,997 would take you about forty-nine 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 21025997 cubic inches would be around 23 feet tall.

Recreational maths with 21025997

• 21025997 backwards is 79952012
• The number of decimal digits it has is: 8
• The sum of 21025997's digits is 35
• More coming soon!