440

Names of 440

• Cardinal: 440 can be written as Four hundred forty.

Scientific notation

• Scientific notation: 4.4 × 10²

Factors of 440

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 18

Divisors of 440

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 4 5 8 10 11 20 22 40 44 55 88 110 220 440
• Sum of all divisors σ(n): 1080
• Sum of proper divisors (its aliquot sum) s(n): 640
• 440 is an abundant number, because the sum of its proper divisors (640) is greater than itself. Its abundance is 200

Bases of 440

• Binary: 110111000₂
• Hexadecimal: 0x1B8
• Base-36: C8

Squares and roots of 440

• 440 squared (440²) is 193600
• 440 cubed (440³) is 85184000
• The square root of 440 is 20.9761769635
• The cube root of 440 is 7.6059049215

Scales and comparisons

• 440 seconds is equal to 7 minutes, 20 seconds.
• To count from 1 to 440 would take you about three 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 440 cubic inches would be around 0.6 feet tall.

Recreational maths with 440

• 440 backwards is 044
• 440 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 440's digits is 8
• More coming soon!