21364991

Names of 21364991

• Cardinal: 21364991 can be written as Twenty-one million, three hundred sixty-four thousand, nine hundred ninety-one.

Scientific notation

• Scientific notation: 2.1364991 × 10⁷

Factors of 21364991

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21364991

Divisors of 21364991

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21364991
• Sum of all divisors σ(n): 21364992
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21364991 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21364990

Bases of 21364991

• Binary: 1010001100000000011111111₂
• Hexadecimal: 0x14600FF
• Base-36: CPXBZ

Squares and roots of 21364991

• 21364991 squared (21364991²) is 456462840430081
• 21364991 cubed (21364991³) is 9752324477623116694271
• The square root of 21364991 is 4622.2279260115
• The cube root of 21364991 is 277.4816306863

Scales and comparisons

• 21,364,991 seconds is equal to 35 weeks, 2 days, 6 hours, 43 minutes, 11 seconds.
• To count from 1 to 21,364,991 would take you about six 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 21364991 cubic inches would be around 23.1 feet tall.

Recreational maths with 21364991

• 21364991 backwards is 19946312
• The number of decimal digits it has is: 8
• The sum of 21364991's digits is 35
• More coming soon!