388993126221

Names of 388993126221

• Cardinal: 388993126221 can be written as Three hundred eighty-eight billion, nine hundred ninety-three million, one hundred twenty-six thousand, two hundred twenty-one.

Scientific notation

• Scientific notation: 3.88993126221 × 10¹¹

Factors of 388993126221

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 6491

Divisors of 388993126221

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 7 9 21 27 49 63 147 189 343 441 1029 1323 3087 6481 9261 19443 45367 58329 136101 174987 317569 408303 952707 1224909 2222983 2858121 6668949 8574363 20006847 42003361 60020541 126010083 294023527 378030249 882070581 1134090747 2058164689 2646211743 6174494067 7938635229 14407152823 18523482201 43221458469 55570446603 129664375407 388993126221
• Sum of all divisors σ(n): 672157488000
• Sum of proper divisors (its aliquot sum) s(n): 283164361779
• 388993126221 is a deficient number, because the sum of its proper divisors (283164361779) is less than itself. Its deficiency is 105828764442

Bases of 388993126221

• Binary: 101101010010001110011000000111101001101₂
• Hexadecimal: 0x5A91CC0F4D
• Base-36: 4YP8GP59

Squares and roots of 388993126221

• 388993126221 squared (388993126221²) is 151315652247186837740841
• 388993126221 cubed (388993126221³) is 58860748613802891865492809599691861
• The square root of 388993126221 is 623693.1346591847
• The cube root of 388993126221 is 7299.8506644937

Scales and comparisons

• 388,993,126,221 seconds is equal to 12,368 years, 40 weeks, 3 days, 6 hours, 10 minutes, 21 seconds.
• To count from 1 to 388,993,126,221 would take you about twenty-four thousand, seven hundred thirty-seven 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 388993126221 cubic inches would be around 608.3 feet tall.

Recreational maths with 388993126221

• 388993126221 backwards is 122621399883
• The number of decimal digits it has is: 12
• The sum of 388993126221's digits is 54
• More coming soon!