40128442

Names of 40128442

• Cardinal: 40128442 can be written as Forty million, one hundred twenty-eight thousand, four hundred forty-two.

Scientific notation

• Scientific notation: 4.0128442 × 10⁷

Factors of 40128442

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 52772

Divisors of 40128442

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 383 766 52387 104774 20064221 40128442
• Sum of all divisors σ(n): 60350976
• Sum of proper divisors (its aliquot sum) s(n): 20222534
• 40128442 is a deficient number, because the sum of its proper divisors (20222534) is less than itself. Its deficiency is 19905908

Bases of 40128442

• Binary: 10011001000100111110111010₂
• Hexadecimal: 0x2644FBA
• Base-36: NW3AY

Squares and roots of 40128442

• 40128442 squared (40128442²) is 1610291857347364
• 40128442 cubed (40128442³) is 64618503400635970126888
• The square root of 40128442 is 6334.7014136421
• The cube root of 40128442 is 342.3608527773

Scales and comparisons

• 40,128,442 seconds is equal to 1 year, 14 weeks, 2 days, 10 hours, 47 minutes, 22 seconds.
• To count from 1 to 40,128,442 would take you about forty-seven 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 40128442 cubic inches would be around 28.5 feet tall.

Recreational maths with 40128442

• 40128442 backwards is 24482104
• The number of decimal digits it has is: 8
• The sum of 40128442's digits is 25
• More coming soon!