40385642

Names of 40385642

• Cardinal: 40385642 can be written as Forty million, three hundred eighty-five thousand, six hundred forty-two.

Scientific notation

• Scientific notation: 4.0385642 × 10⁷

Factors of 40385642

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 1414

Divisors of 40385642

• Number of divisors d(n): 32
• Complete list of divisors:
  1 2 11 17 22 34 83 166 187 374 913 1301 1411 1826 2602 2822 14311 15521 22117 28622 31042 44234 107983 215966 243287 486574 1187813 1835711 2375626 3671422 20192821 40385642
• Sum of all divisors σ(n): 70870464
• Sum of proper divisors (its aliquot sum) s(n): 30484822
• 40385642 is a deficient number, because the sum of its proper divisors (30484822) is less than itself. Its deficiency is 9900820

Bases of 40385642

• Binary: 10011010000011110001101010₂
• Hexadecimal: 0x2683C6A
• Base-36: O1LRE

Squares and roots of 40385642

• 40385642 squared (40385642²) is 1631000079752164
• 40385642 cubed (40385642³) is 65868985322842344029288
• The square root of 40385642 is 6354.9698661757
• The cube root of 40385642 is 343.0907403283

Scales and comparisons

• 40,385,642 seconds is equal to 1 year, 14 weeks, 5 days, 10 hours, 14 minutes, 2 seconds.
• To count from 1 to 40,385,642 would take you about forty-eight weeks!

  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 40385642 cubic inches would be around 28.6 feet tall.

Recreational maths with 40385642

• 40385642 backwards is 24658304
• The number of decimal digits it has is: 8
• The sum of 40385642's digits is 32
• More coming soon!