40643642

Names of 40643642

• Cardinal: 40643642 can be written as Forty million, six hundred forty-three thousand, six hundred forty-two.

Scientific notation

• Scientific notation: 4.0643642 × 10⁷

Factors of 40643642

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1563232

Divisors of 40643642

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 13 26 1563217 3126434 20321821 40643642
• Sum of all divisors σ(n): 65655156
• Sum of proper divisors (its aliquot sum) s(n): 25011514
• 40643642 is a deficient number, because the sum of its proper divisors (25011514) is less than itself. Its deficiency is 15632128

Bases of 40643642

• Binary: 10011011000010110000111010₂
• Hexadecimal: 0x26C2C3A
• Base-36: O74U2

Squares and roots of 40643642

• 40643642 squared (40643642²) is 1651905635024164
• 40643642 cubed (40643642³) is 67139461247704782965288
• The square root of 40643642 is 6375.2366230595
• The cube root of 40643642 is 343.8197913611

Scales and comparisons

• 40,643,642 seconds is equal to 1 year, 15 weeks, 1 day, 9 hours, 54 minutes, 2 seconds.
• To count from 1 to 40,643,642 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 40643642 cubic inches would be around 28.7 feet tall.

Recreational maths with 40643642

• 40643642 backwards is 24634604
• The number of decimal digits it has is: 8
• The sum of 40643642's digits is 29
• More coming soon!