2105

Names of 2105

• Cardinal: 2105 can be written as Two thousand, one hundred five.

Scientific notation

• Scientific notation: 2.105 × 10³

Factors of 2105

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 426

Divisors of 2105

• Number of divisors d(n): 4
• Complete list of divisors:
  1 5 421 2105
• Sum of all divisors σ(n): 2532
• Sum of proper divisors (its aliquot sum) s(n): 427
• 2105 is a deficient number, because the sum of its proper divisors (427) is less than itself. Its deficiency is 1678

Bases of 2105

• Binary: 100000111001₂
• Hexadecimal: 0x839
• Base-36: 1MH

Squares and roots of 2105

• 2105 squared (2105²) is 4431025
• 2105 cubed (2105³) is 9327307625
• The square root of 2105 is 45.8802789879
• The cube root of 2105 is 12.8159469211

Scales and comparisons

• 2,105 seconds is equal to 35 minutes, 5 seconds.
• To count from 1 to 2,105 would take you about thirty-five 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 2105 cubic inches would be around 1.1 feet tall.

Recreational maths with 2105

• 2105 backwards is 5012
• The number of decimal digits it has is: 4
• The sum of 2105's digits is 8
• More coming soon!