18643662438272

Names of 18643662438272

• Cardinal: 18643662438272 can be written as Eighteen trillion, six hundred forty-three billion, six hundred sixty-two million, four hundred thirty-eight thousand, two hundred seventy-two.

Scientific notation

• Scientific notation: 1.8643662438272 × 10¹³

Factors of 18643662438272

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 631771

Divisors of 18643662438272

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 4 8 16 19 32 38 64 76 128 152 304 608 1216 2432 12377 24754 49508 99016 198032 235163 396064 470326 619373 792128 940652 1238746 1584256 1881304 2477492 3762608 4954984 7525216 9909968 11768087 15050432 19819936 23536174 30100864 39639872 47072348 79279744 94144696 188289392 376578784 753157568 1506315136 7665979621 15331959242 30663918484 61327836968 122655673936 145653612799 245311347872 291307225598 490622695744 582614451196 981245391488 1165228902392 2330457804784 4660915609568 9321831219136 18643662438272
• Sum of all divisors σ(n): 39099717997200
• Sum of proper divisors (its aliquot sum) s(n): 20456055558928
• 18643662438272 is an abundant number, because the sum of its proper divisors (20456055558928) is greater than itself. Its abundance is 1812393120656

Bases of 18643662438272

• Binary: 100001111010011010000111000000111111110000000₂
• Hexadecimal: 0x10F4D0E07F80
• Base-36: 6LWS390U8

Squares and roots of 18643662438272

• 18643662438272 squared (18643662438272²) is 347586149112234256210345984
• 18643662438272 cubed (18643662438272³) is 6480278832267372281324223366574163099648
• The square root of 18643662438272 is 4317830.7560940827
• The cube root of 18643662438272 is 26516.1465326099

Scales and comparisons

• 18,643,662,438,272 seconds is equal to 592,810 years, 41 weeks, 3 days, 1 hour, 44 minutes, 32 seconds.
• To count from 1 to 18,643,662,438,272 would take you about one million, four hundred eighty-two thousand and twenty-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 18643662438272 cubic inches would be around 2209.7 feet tall.

Recreational maths with 18643662438272

• 18643662438272 backwards is 27283426634681
• The number of decimal digits it has is: 14
• The sum of 18643662438272's digits is 62
• More coming soon!