64390018

Names of 64390018

• Cardinal: 64390018 can be written as Sixty-four million, three hundred ninety thousand and eighteen.

Scientific notation

• Scientific notation: 6.4390018 × 10⁷

Factors of 64390018

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 96

Divisors of 64390018

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 7 11 14 22 23 46 49 53 77 98 106 154 161 253 322 343 371 506 539 583 686 742 1078 1127 1166 1219 1771 2254 2401 2438 2597 3542 3773 4081 4802 5194 7546 7889 8162 8533 12397 13409 15778 17066 18179 24794 26411 26818 28567 36358 52822 55223 57134 59731 86779 93863 110446 119462 127253 173558 187726 199969 254506 399938 418117 607453 657041 836234 1214906 1314082 1399783 2799566 2926819 4599287 5853638 9198574 32195009 64390018
• Sum of all divisors σ(n): 130683456
• Sum of proper divisors (its aliquot sum) s(n): 66293438
• 64390018 is an abundant number, because the sum of its proper divisors (66293438) is greater than itself. Its abundance is 1903420

Bases of 64390018

• Binary: 11110101101000001110000010₂
• Hexadecimal: 0x3D68382
• Base-36: 12C3NM

Squares and roots of 64390018

• 64390018 squared (64390018²) is 4146074418040324
• 64390018 cubed (64390018³) is 266965806406955987085832
• The square root of 64390018 is 8024.3391005115
• The cube root of 64390018 is 400.8108925227

Scales and comparisons

• 64,390,018 seconds is equal to 2 years, 2 weeks, 3 days, 6 hours, 6 minutes, 58 seconds.
• To count from 1 to 64,390,018 would take you about three years!

  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 64390018 cubic inches would be around 33.4 feet tall.

Recreational maths with 64390018

• 64390018 backwards is 81009346
• The number of decimal digits it has is: 8
• The sum of 64390018's digits is 31
• More coming soon!