40215

Names of 40215

• Cardinal: 40215 can be written as Forty thousand, two hundred fifteen.

Scientific notation

• Scientific notation: 4.0215 × 10⁴

Factors of 40215

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 398

Divisors of 40215

• Number of divisors d(n): 16
• Complete list of divisors:
  1 3 5 7 15 21 35 105 383 1149 1915 2681 5745 8043 13405 40215
• Sum of all divisors σ(n): 73728
• Sum of proper divisors (its aliquot sum) s(n): 33513
• 40215 is a deficient number, because the sum of its proper divisors (33513) is less than itself. Its deficiency is 6702

Bases of 40215

• Binary: 1001110100010111₂
• Hexadecimal: 0x9D17
• Base-36: V13

Squares and roots of 40215

• 40215 squared (40215²) is 1617246225
• 40215 cubed (40215³) is 65037556938375
• The square root of 40215 is 200.5367796689
• The cube root of 40215 is 34.2606836155

Scales and comparisons

• 40,215 seconds is equal to 11 hours, 10 minutes, 15 seconds.
• To count from 1 to 40,215 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 40215 cubic inches would be around 2.9 feet tall.

Recreational maths with 40215

• 40215 backwards is 51204
• The number of decimal digits it has is: 5
• The sum of 40215's digits is 12
• More coming soon!