21648997

Names of 21648997

• Cardinal: 21648997 can be written as Twenty-one million, six hundred forty-eight thousand, nine hundred ninety-seven.

Scientific notation

• Scientific notation: 2.1648997 × 10⁷

Factors of 21648997

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21648997

Divisors of 21648997

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21648997
• Sum of all divisors σ(n): 21648998
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21648997 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21648996

Bases of 21648997

• Binary: 1010010100101011001100101₂
• Hexadecimal: 0x14A5665
• Base-36: CW0H1

Squares and roots of 21648997

• 21648997 squared (21648997²) is 468679071106009
• 21648997 cubed (21648997³) is 10146431804336775522973
• The square root of 21648997 is 4652.8482674595
• The cube root of 21648997 is 278.7057487049

Scales and comparisons

• 21,648,997 seconds is equal to 35 weeks, 5 days, 13 hours, 36 minutes, 37 seconds.
• To count from 1 to 21,648,997 would take you about four 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 21648997 cubic inches would be around 23.2 feet tall.

Recreational maths with 21648997

• 21648997 backwards is 79984612
• The number of decimal digits it has is: 8
• The sum of 21648997's digits is 46
• More coming soon!