3855

Names of 3855

• Cardinal: 3855 can be written as Three thousand, eight hundred fifty-five.

Scientific notation

• Scientific notation: 3.855 × 10³

Factors of 3855

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 265

Divisors of 3855

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 5 15 257 771 1285 3855
• Sum of all divisors σ(n): 6192
• Sum of proper divisors (its aliquot sum) s(n): 2337
• 3855 is a deficient number, because the sum of its proper divisors (2337) is less than itself. Its deficiency is 1518

Bases of 3855

• Binary: 111100001111₂
• Hexadecimal: 0xF0F
• Base-36: 2Z3

Squares and roots of 3855

• 3855 squared (3855²) is 14861025
• 3855 cubed (3855³) is 57289251375
• The square root of 3855 is 62.0886463051
• The cube root of 3855 is 15.6798340087

Scales and comparisons

• 3,855 seconds is equal to 1 hour, 4 minutes, 15 seconds.
• To count from 1 to 3,855 would take you about four 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 3855 cubic inches would be around 1.3 feet tall.

Recreational maths with 3855

• 3855 backwards is 5583
• The number of decimal digits it has is: 4
• The sum of 3855's digits is 21
• More coming soon!