21729775321

Names of 21729775321

• Cardinal: 21729775321 can be written as Twenty-one billion, seven hundred twenty-nine million, seven hundred seventy-five thousand, three hundred twenty-one.

Scientific notation

• Scientific notation: 2.1729775321 × 10¹⁰

Factors of 21729775321

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 3269878

Divisors of 21729775321

• Number of divisors d(n): 4
• Complete list of divisors:
  1 6659 3263219 21729775321
• Sum of all divisors σ(n): 21733045200
• Sum of proper divisors (its aliquot sum) s(n): 3269879
• 21729775321 is a deficient number, because the sum of its proper divisors (3269879) is less than itself. Its deficiency is 21726505442

Bases of 21729775321

• Binary: 10100001111001100100000111011011001₂
• Hexadecimal: 0x50F320ED9
• Base-36: 9ZDCHY1

Squares and roots of 21729775321

• 21729775321 squared (21729775321²) is 472183135501140653041
• 21729775321 cubed (21729775321³) is 10260433444805085129800145401161
• The square root of 21729775321 is 147410.2280067431
• The cube root of 21729775321 is 2790.5196088187

Scales and comparisons

• 21,729,775,321 seconds is equal to 690 years, 48 weeks, 6 days, 42 minutes, 1 second.
• To count from 1 to 21,729,775,321 would take you about one thousand, three hundred eighty-one 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 21729775321 cubic inches would be around 232.5 feet tall.

Recreational maths with 21729775321

• 21729775321 backwards is 12357792712
• The number of decimal digits it has is: 11
• The sum of 21729775321's digits is 46
• More coming soon!