13978015

Names of 13978015

• Cardinal: 13978015 can be written as Thirteen million, nine hundred seventy-eight thousand and fifteen.

Scientific notation

• Scientific notation: 1.3978015 × 10⁷

Factors of 13978015

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 147161

Divisors of 13978015

• Number of divisors d(n): 8
• Complete list of divisors:
  1 5 19 95 147137 735685 2795603 13978015
• Sum of all divisors σ(n): 17656560
• Sum of proper divisors (its aliquot sum) s(n): 3678545
• 13978015 is a deficient number, because the sum of its proper divisors (3678545) is less than itself. Its deficiency is 10299470

Bases of 13978015

• Binary: 110101010100100110011111₂
• Hexadecimal: 0xD5499F
• Base-36: 8BLI7

Squares and roots of 13978015

• 13978015 squared (13978015²) is 195384903340225
• 13978015 cubed (13978015³) is 2731093109663215153375
• The square root of 13978015 is 3738.7183632897
• The cube root of 13978015 is 240.8880008507

Scales and comparisons

• 13,978,015 seconds is equal to 23 weeks, 18 hours, 46 minutes, 55 seconds.
• To count from 1 to 13,978,015 would take you about thirty-four weeks!

  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 13978015 cubic inches would be around 20.1 feet tall.

Recreational maths with 13978015

• 13978015 backwards is 51087931
• The number of decimal digits it has is: 8
• The sum of 13978015's digits is 34
• More coming soon!