21388590401772

Names of 21388590401772

• Cardinal: 21388590401772 can be written as Twenty-one trillion, three hundred eighty-eight billion, five hundred ninety million, four hundred one thousand, seven hundred seventy-two.

Scientific notation

• Scientific notation: 2.1388590401772 × 10¹³

Factors of 21388590401772

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 121385

Divisors of 21388590401772

• Number of divisors d(n): 54
• Complete list of divisors:
  1 2 3 4 6 11 12 22 33 44 66 121 132 242 363 484 726 1452 121369 242738 364107 485476 728214 1335059 1456428 2670118 4005177 5340236 8010354 14685649 16020708 29371298 44056947 58742596 88113894 176227788 14730434161 29460868322 44191302483 58921736644 88382604966 162034775771 176765209932 324069551542 486104327313 648139103084 972208654626 1782382533481 1944417309252 3564765066962 5347147600443 7129530133924 10694295200886 21388590401772
• Sum of all divisors σ(n): 54856588797444
• Sum of proper divisors (its aliquot sum) s(n): 33467998395672
• 21388590401772 is an abundant number, because the sum of its proper divisors (33467998395672) is greater than itself. Its abundance is 12079407993900

Bases of 21388590401772

• Binary: 100110111001111101011010101010100100011101100₂
• Hexadecimal: 0x1373EB5548EC
• Base-36: 7KXS6HKOC

Squares and roots of 21388590401772

• 21388590401772 squared (21388590401772²) is 457471799374773324380739984
• 21388590401772 cubed (21388590401772³) is 9784676937188642756518079497481224851648
• The square root of 21388590401772 is 4624780.0382041955
• The cube root of 21388590401772 is 27758.3760238287

Scales and comparisons

• 21,388,590,401,772 seconds is equal to 680,091 years, 5 days, 15 hours, 36 minutes, 12 seconds.
• To count from 1 to 21,388,590,401,772 would take you about one million, seven hundred thousand, two hundred twenty-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 21388590401772 cubic inches would be around 2313.2 feet tall.

Recreational maths with 21388590401772

• 21388590401772 backwards is 27710409588312
• The number of decimal digits it has is: 14
• The sum of 21388590401772's digits is 57
• More coming soon!