15945

Names of 15945

• Cardinal: 15945 can be written as Fifteen thousand, nine hundred forty-five.

Scientific notation

• Scientific notation: 1.5945 × 10⁴

Factors of 15945

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1071

Divisors of 15945

• Number of divisors d(n): 8
• Complete list of divisors:
  1 3 5 15 1063 3189 5315 15945
• Sum of all divisors σ(n): 25536
• Sum of proper divisors (its aliquot sum) s(n): 9591
• 15945 is a deficient number, because the sum of its proper divisors (9591) is less than itself. Its deficiency is 6354

Bases of 15945

• Binary: 11111001001001₂
• Hexadecimal: 0x3E49
• Base-36: CAX

Squares and roots of 15945

• 15945 squared (15945²) is 254243025
• 15945 cubed (15945³) is 4053905033625
• The square root of 15945 is 126.2735126619
• The cube root of 15945 is 25.1695146601

Scales and comparisons

• 15,945 seconds is equal to 4 hours, 25 minutes, 45 seconds.
• To count from 1 to 15,945 would take you about four hours.

  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 15945 cubic inches would be around 2.1 feet tall.

Recreational maths with 15945

• 15945 backwards is 54951
• The number of decimal digits it has is: 5
• The sum of 15945's digits is 24
• More coming soon!