21389933

Names of 21389933

• Cardinal: 21389933 can be written as Twenty-one million, three hundred eighty-nine thousand, nine hundred thirty-three.

Scientific notation

• Scientific notation: 2.1389933 × 10⁷

Factors of 21389933

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21389933

Divisors of 21389933

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21389933
• Sum of all divisors σ(n): 21389934
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21389933 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21389932

Bases of 21389933

• Binary: 1010001100110001001101101₂
• Hexadecimal: 0x146626D
• Base-36: CQGKT

Squares and roots of 21389933

• 21389933 squared (21389933²) is 457529233744489
• 21389933 cubed (21389933³) is 9786519655335958829237
• The square root of 21389933 is 4624.9251885841
• The cube root of 21389933 is 277.5895682519

Scales and comparisons

• 21,389,933 seconds is equal to 35 weeks, 2 days, 13 hours, 38 minutes, 53 seconds.
• To count from 1 to 21,389,933 would take you about eight hours!

  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 21389933 cubic inches would be around 23.1 feet tall.

Recreational maths with 21389933

• 21389933 backwards is 33998312
• The number of decimal digits it has is: 8
• The sum of 21389933's digits is 38
• More coming soon!