385

Names of 385

• Cardinal: 385 can be written as Three hundred eighty-five.

Scientific notation

• Scientific notation: 3.85 × 10²

Factors of 385

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 23

Divisors of 385

• Number of divisors d(n): 8
• Complete list of divisors:
  1 5 7 11 35 55 77 385
• Sum of all divisors σ(n): 576
• Sum of proper divisors (its aliquot sum) s(n): 191
• 385 is a deficient number, because the sum of its proper divisors (191) is less than itself. Its deficiency is 194

Bases of 385

• Binary: 110000001₂
• Hexadecimal: 0x181
• Base-36: AP

Squares and roots of 385

• 385 squared (385²) is 148225
• 385 cubed (385³) is 57066625
• The square root of 385 is 19.6214168703
• The cube root of 385 is 7.2747863487

Scales and comparisons

• 385 seconds is equal to 6 minutes, 25 seconds.
• To count from 1 to 385 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 385 cubic inches would be around 0.6 feet tall.

Recreational maths with 385

• 385 backwards is 583
• The number of decimal digits it has is: 3
• The sum of 385's digits is 16
• More coming soon!