21354133788

Names of 21354133788

• Cardinal: 21354133788 can be written as Twenty-one billion, three hundred fifty-four million, one hundred thirty-three thousand, seven hundred eighty-eight.

Scientific notation

• Scientific notation: 2.1354133788 × 10¹⁰

Factors of 21354133788

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 31736

Divisors of 21354133788

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 6 9 12 13 18 26 27 36 39 52 54 78 108 117 156 234 351 468 487 702 974 1404 1461 1948 2922 4383 5844 6331 8766 12662 13149 17532 18993 25324 26298 31231 37986 52596 56979 62462 75972 93693 113958 124924 170937 187386 227916 281079 341874 374772 406003 562158 683748 812006 843237 1124316 1218009 1624012 1686474 2436018 3372948 3654027 4872036 7308054 10962081 14616108 15209497 21924162 30418994 43848324 45628491 60837988 91256982 136885473 182513964 197723461 273770946 395446922 410656419 547541892 593170383 790893844 821312838 1186340766 1642625676 1779511149 2372681532 3559022298 5338533447 7118044596 10677066894 21354133788
• Sum of all divisors σ(n): 59745566720
• Sum of proper divisors (its aliquot sum) s(n): 38391432932
• 21354133788 is an abundant number, because the sum of its proper divisors (38391432932) is greater than itself. Its abundance is 17037299144

Bases of 21354133788

• Binary: 10011111000110011100011100100011100₂
• Hexadecimal: 0x4F8CE391C
• Base-36: 9T5P730

Squares and roots of 21354133788

• 21354133788 squared (21354133788²) is 455999029835803228944
• 21354133788 cubed (21354133788³) is 9737464290311945823312569959872
• The square root of 21354133788 is 146130.5368087041
• The cube root of 21354133788 is 2774.3461939629

Scales and comparisons

• 21,354,133,788 seconds is equal to 678 years, 51 weeks, 5 days, 7 hours, 49 minutes, 48 seconds.
• To count from 1 to 21,354,133,788 would take you about one thousand, three hundred fifty-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 21354133788 cubic inches would be around 231.2 feet tall.

Recreational maths with 21354133788

• 21354133788 backwards is 88733145312
• The number of decimal digits it has is: 11
• The sum of 21354133788's digits is 45
• More coming soon!