13721430

Names of 13721430

• Cardinal: 13721430 can be written as Thirteen million, seven hundred twenty-one thousand, four hundred thirty.

Scientific notation

• Scientific notation: 1.372143 × 10⁷

Factors of 13721430

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 457391

Divisors of 13721430

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 3 5 6 10 15 30 457381 914762 1372143 2286905 2744286 4573810 6860715 13721430
• Sum of all divisors σ(n): 32931504
• Sum of proper divisors (its aliquot sum) s(n): 19210074
• 13721430 is an abundant number, because the sum of its proper divisors (19210074) is greater than itself. Its abundance is 5488644

Bases of 13721430

• Binary: 110100010101111101010110₂
• Hexadecimal: 0xD15F56
• Base-36: 863IU

Squares and roots of 13721430

• 13721430 squared (13721430²) is 188277641244900
• 13721430 cubed (13721430³) is 2583438474907008207000
• The square root of 13721430 is 3704.2448623167
• The cube root of 13721430 is 239.4049494757

Scales and comparisons

• 13,721,430 seconds is equal to 22 weeks, 4 days, 19 hours, 30 minutes, 30 seconds.
• To count from 1 to 13,721,430 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 13721430 cubic inches would be around 20 feet tall.

Recreational maths with 13721430

• 13721430 backwards is 03412731
• The number of decimal digits it has is: 8
• The sum of 13721430's digits is 21
• More coming soon!