13730821

Names of 13730821

• Cardinal: 13730821 can be written as Thirteen million, seven hundred thirty thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 1.3730821 × 10⁷

Factors of 13730821

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 1056230

Divisors of 13730821

• Number of divisors d(n): 4
• Complete list of divisors:
  1 13 1056217 13730821
• Sum of all divisors σ(n): 14787052
• Sum of proper divisors (its aliquot sum) s(n): 1056231
• 13730821 is a deficient number, because the sum of its proper divisors (1056231) is less than itself. Its deficiency is 12674590

Bases of 13730821

• Binary: 110100011000010000000101₂
• Hexadecimal: 0xD18405
• Base-36: 86ARP

Squares and roots of 13730821

• 13730821 squared (13730821²) is 188535445334041
• 13730821 cubed (13730821³) is 2588746452037002177661
• The square root of 13730821 is 3705.5122452907
• The cube root of 13730821 is 239.4595535797

Scales and comparisons

• 13,730,821 seconds is equal to 22 weeks, 4 days, 22 hours, 7 minutes, 1 second.
• To count from 1 to 13,730,821 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 13730821 cubic inches would be around 20 feet tall.

Recreational maths with 13730821

• 13730821 backwards is 12803731
• The number of decimal digits it has is: 8
• The sum of 13730821's digits is 25
• More coming soon!