13978428

Names of 13978428

• Cardinal: 13978428 can be written as Thirteen million, nine hundred seventy-eight thousand, four hundred twenty-eight.

Scientific notation

• Scientific notation: 1.3978428 × 10⁷

Factors of 13978428

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 1164874

Divisors of 13978428

• Number of divisors d(n): 12
• Complete list of divisors:
  1 2 3 4 6 12 1164869 2329738 3494607 4659476 6989214 13978428
• Sum of all divisors σ(n): 32616360
• Sum of proper divisors (its aliquot sum) s(n): 18637932
• 13978428 is an abundant number, because the sum of its proper divisors (18637932) is greater than itself. Its abundance is 4659504

Bases of 13978428

• Binary: 110101010100101100111100₂
• Hexadecimal: 0xD54B3C
• Base-36: 8BLTO

Squares and roots of 13978428

• 13978428 squared (13978428²) is 195396449351184
• 13978428 cubed (13978428³) is 2731335198711172258752
• The square root of 13978428 is 3738.7735957129
• The cube root of 13978428 is 240.8903732849

Scales and comparisons

• 13,978,428 seconds is equal to 23 weeks, 18 hours, 53 minutes, 48 seconds.
• To count from 1 to 13,978,428 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 13978428 cubic inches would be around 20.1 feet tall.

Recreational maths with 13978428

• 13978428 backwards is 82487931
• The number of decimal digits it has is: 8
• The sum of 13978428's digits is 42
• More coming soon!