320

Names of 320

• Cardinal: 320 can be written as Three hundred twenty.

Scientific notation

• Scientific notation: 3.2 × 10²

Factors of 320

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 7

Divisors of 320

• Number of divisors d(n): 14
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 160 320
• Sum of all divisors σ(n): 762
• Sum of proper divisors (its aliquot sum) s(n): 442
• 320 is an abundant number, because the sum of its proper divisors (442) is greater than itself. Its abundance is 122

Bases of 320

• Binary: 101000000₂
• Hexadecimal: 0x140
• Base-36: 8W

Squares and roots of 320

• 320 squared (320²) is 102400
• 320 cubed (320³) is 32768000
• The square root of 320 is 17.8885438200
• The cube root of 320 is 6.8399037869

Scales and comparisons

• 320 seconds is equal to 5 minutes, 20 seconds.
• To count from 1 to 320 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 320 cubic inches would be around 0.6 feet tall.

Recreational maths with 320

• 320 backwards is 023
• 320 is a Harshad number.
• The number of decimal digits it has is: 3
• The sum of 320's digits is 5
• More coming soon!