40638

Names of 40638

• Cardinal: 40638 can be written as Forty thousand, six hundred thirty-eight.

Scientific notation

• Scientific notation: 4.0638 × 10⁴

Factors of 40638

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 539

Divisors of 40638

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 3 6 13 26 39 78 521 1042 1563 3126 6773 13546 20319 40638
• Sum of all divisors σ(n): 87696
• Sum of proper divisors (its aliquot sum) s(n): 47058
• 40638 is an abundant number, because the sum of its proper divisors (47058) is greater than itself. Its abundance is 6420

Bases of 40638

• Binary: 1001111010111110₂
• Hexadecimal: 0x9EBE
• Base-36: VCU

Squares and roots of 40638

• 40638 squared (40638²) is 1651447044
• 40638 cubed (40638³) is 67111504974072
• The square root of 40638 is 201.5886901589
• The cube root of 40638 is 34.3803881361

Scales and comparisons

• 40,638 seconds is equal to 11 hours, 17 minutes, 18 seconds.
• To count from 1 to 40,638 would take you about eleven hours.

  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 40638 cubic inches would be around 2.9 feet tall.

Recreational maths with 40638

• 40638 backwards is 83604
• The number of decimal digits it has is: 5
• The sum of 40638's digits is 21
• More coming soon!