240

Names of 240

• Cardinal: 240 can be written as Two hundred forty.

Scientific notation

• Scientific notation: 2.4 × 10²

Factors of 240

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 10

Divisors of 240

• Number of divisors d(n): 20
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240
• Sum of all divisors σ(n): 744
• Sum of proper divisors (its aliquot sum) s(n): 504
• 240 is an abundant number, because the sum of its proper divisors (504) is greater than itself. Its abundance is 264

Bases of 240

• Binary: 11110000₂
• Hexadecimal: 0xF0
• Base-36: 6O

Squares and roots of 240

• 240 squared (240²) is 57600
• 240 cubed (240³) is 13824000
• The square root of 240 is 15.4919333849
• The cube root of 240 is 6.2144650119

Scales and comparisons

• 240 seconds is equal to 4 minutes.
• To count from 1 to 240 would take you about two minutes.

  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 240 cubic inches would be around 0.5 feet tall.

Recreational maths with 240

• 240 backwards is 042
• 240 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 240's digits is 6
• More coming soon!