40845

Names of 40845

• Cardinal: 40845 can be written as Forty thousand, eight hundred forty-five.

Scientific notation

• Scientific notation: 4.0845 × 10⁴

Factors of 40845

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 404

Divisors of 40845

• Number of divisors d(n): 16
• Complete list of divisors:
  1 3 5 7 15 21 35 105 389 1167 1945 2723 5835 8169 13615 40845
• Sum of all divisors σ(n): 74880
• Sum of proper divisors (its aliquot sum) s(n): 34035
• 40845 is a deficient number, because the sum of its proper divisors (34035) is less than itself. Its deficiency is 6810

Bases of 40845

• Binary: 1001111110001101₂
• Hexadecimal: 0x9F8D
• Base-36: VIL

Squares and roots of 40845

• 40845 squared (40845²) is 1668314025
• 40845 cubed (40845³) is 68142286351125
• The square root of 40845 is 202.1014596681
• The cube root of 40845 is 34.4386643865

Scales and comparisons

• 40,845 seconds is equal to 11 hours, 20 minutes, 45 seconds.
• To count from 1 to 40,845 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 40845 cubic inches would be around 2.9 feet tall.

Recreational maths with 40845

• 40845 backwards is 54804
• 40845 is a Harshad number.
• The number of decimal digits it has is: 5
• The sum of 40845's digits is 21
• More coming soon!