21650989

Names of 21650989

• Cardinal: 21650989 can be written as Twenty-one million, six hundred fifty thousand, nine hundred eighty-nine.

Scientific notation

• Scientific notation: 2.1650989 × 10⁷

Factors of 21650989

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 698450

Divisors of 21650989

• Number of divisors d(n): 4
• Complete list of divisors:
  1 31 698419 21650989
• Sum of all divisors σ(n): 22349440
• Sum of proper divisors (its aliquot sum) s(n): 698451
• 21650989 is a deficient number, because the sum of its proper divisors (698451) is less than itself. Its deficiency is 20952538

Bases of 21650989

• Binary: 1010010100101111000101101₂
• Hexadecimal: 0x14A5E2D
• Base-36: CW20D

Squares and roots of 21650989

• 21650989 squared (21650989²) is 468765324678121
• 21650989 cubed (21650989³) is 10149232888187426311669
• The square root of 21650989 is 4653.0623249641
• The cube root of 21650989 is 278.7142966733

Scales and comparisons

• 21,650,989 seconds is equal to 35 weeks, 5 days, 14 hours, 9 minutes, 49 seconds.
• To count from 1 to 21,650,989 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 21650989 cubic inches would be around 23.2 feet tall.

Recreational maths with 21650989

• 21650989 backwards is 98905612
• The number of decimal digits it has is: 8
• The sum of 21650989's digits is 40
• More coming soon!