13215021845

Names of 13215021845

• Cardinal: 13215021845 can be written as Thirteen billion, two hundred fifteen million, twenty-one thousand, eight hundred forty-five.

Scientific notation

• Scientific notation: 1.3215021845 × 10¹⁰

Factors of 13215021845

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 699879

Divisors of 13215021845

• Number of divisors d(n): 8
• Complete list of divisors:
  1 5 3797 18985 696077 3480385 2643004369 13215021845
• Sum of all divisors σ(n): 15862225464
• Sum of proper divisors (its aliquot sum) s(n): 2647203619
• 13215021845 is a deficient number, because the sum of its proper divisors (2647203619) is less than itself. Its deficiency is 10567818226

Bases of 13215021845

• Binary: 1100010011101011010011101100010101₂
• Hexadecimal: 0x313AD3B15
• Base-36: 62JVS45

Squares and roots of 13215021845

• 13215021845 squared (13215021845²) is 174636802363827204025
• 13215021845 cubed (13215021845³) is 2307829158178924138995646926125
• The square root of 13215021845 is 114956.6085312193
• The cube root of 13215021845 is 2364.2276661077

Scales and comparisons

• 13,215,021,845 seconds is equal to 420 years, 10 weeks, 1 day, 15 hours, 24 minutes, 5 seconds.
• To count from 1 to 13,215,021,845 would take you about eight hundred forty years!

  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 13215021845 cubic inches would be around 197 feet tall.

Recreational maths with 13215021845

• 13215021845 backwards is 54812051231
• The number of decimal digits it has is: 11
• The sum of 13215021845's digits is 32
• More coming soon!