13147932987

Names of 13147932987

• Cardinal: 13147932987 can be written as Thirteen billion, one hundred forty-seven million, nine hundred thirty-two thousand, nine hundred eighty-seven.

Scientific notation

• Scientific notation: 1.3147932987 × 10¹⁰

Factors of 13147932987

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 27558

Divisors of 13147932987

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 7 9 19 21 27 49 57 63 133 147 171 189 361 399 441 513 931 1083 1197 1323 2527 2793 3249 3591 7581 8379 9747 17689 22743 25137 27529 53067 68229 82587 159201 192703 247761 477603 523051 578109 743283 1348921 1569153 1734327 3661357 4046763 4707459 5202981 9937969 10984071 12140289 14122377 25629499 29813907 32952213 36420867 69565783 76888497 89441721 98856639 208697349 230665491 268325163 486960481 626092047 691996473 1460881443 1878276141 4382644329 13147932987
• Sum of all divisors σ(n): 23914760400
• Sum of proper divisors (its aliquot sum) s(n): 10766827413
• 13147932987 is a deficient number, because the sum of its proper divisors (10766827413) is less than itself. Its deficiency is 2381105574

Bases of 13147932987

• Binary: 1100001111101011011000100100111011₂
• Hexadecimal: 0x30FAD893B
• Base-36: 61FXU0R

Squares and roots of 13147932987

• 13147932987 squared (13147932987²) is 172868141830642742169
• 13147932987 cubed (13147932987³) is 2272858744376502277175931028803
• The square root of 13147932987 is 114664.4364526333
• The cube root of 13147932987 is 2360.2200423839

Scales and comparisons

• 13,147,932,987 seconds is equal to 418 years, 3 weeks, 2 days, 3 hours, 36 minutes, 27 seconds.
• To count from 1 to 13,147,932,987 would take you about eight hundred thirty-six 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 13147932987 cubic inches would be around 196.7 feet tall.

Recreational maths with 13147932987

• 13147932987 backwards is 78923974131
• The number of decimal digits it has is: 11
• The sum of 13147932987's digits is 54
• More coming soon!