21609190

Names of 21609190

• Cardinal: 21609190 can be written as Twenty-one million, six hundred nine thousand, one hundred ninety.

Scientific notation

• Scientific notation: 2.160919 × 10⁷

Factors of 21609190

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 2076

Divisors of 21609190

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 5 10 23 46 47 94 115 230 235 470 1081 1999 2162 3998 5405 9995 10810 19990 45977 91954 93953 187906 229885 459770 469765 939530 2160919 4321838 10804595 21609190
• Sum of all divisors σ(n): 41472000
• Sum of proper divisors (its aliquot sum) s(n): 19862810
• 21609190 is a deficient number, because the sum of its proper divisors (19862810) is less than itself. Its deficiency is 1746380

Bases of 21609190

• Binary: 1010010011011101011100110₂
• Hexadecimal: 0x149BAE6
• Base-36: CV5RA

Squares and roots of 21609190

• 21609190 squared (21609190²) is 466957092456100
• 21609190 cubed (21609190³) is 10090564532731431559000
• The square root of 21609190 is 4648.5685968909
• The cube root of 21609190 is 278.5348208993

Scales and comparisons

• 21,609,190 seconds is equal to 35 weeks, 5 days, 2 hours, 33 minutes, 10 seconds.
• To count from 1 to 21,609,190 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 21609190 cubic inches would be around 23.2 feet tall.

Recreational maths with 21609190

• 21609190 backwards is 09190612
• The number of decimal digits it has is: 8
• The sum of 21609190's digits is 28
• More coming soon!