21328992144

Names of 21328992144

• Cardinal: 21328992144 can be written as Twenty-one billion, three hundred twenty-eight million, nine hundred ninety-two thousand, one hundred forty-four.

Scientific notation

• Scientific notation: 2.1328992144 × 10¹⁰

Factors of 21328992144

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 23153

Divisors of 21328992144

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 36 48 54 72 108 144 216 432 2377 4754 7131 9508 14262 19016 20771 21393 28524 38032 41542 42786 57048 62313 64179 83084 85572 114096 124626 128358 166168 171144 186939 249252 256716 332336 342288 373878 498504 513432 560817 747756 997008 1026864 1121634 1495512 2243268 2991024 4486536 8973072 49372667 98745334 148118001 197490668 296236002 394981336 444354003 592472004 789962672 888708006 1184944008 1333062009 1777416012 2369888016 2666124018 3554832024 5332248036 7109664048 10664496072 21328992144
• Sum of all divisors σ(n): 61250811840
• Sum of proper divisors (its aliquot sum) s(n): 39921819696
• 21328992144 is an abundant number, because the sum of its proper divisors (39921819696) is greater than itself. Its abundance is 18592827552

Bases of 21328992144

• Binary: 10011110111010011101001011110010000₂
• Hexadecimal: 0x4F74E9790
• Base-36: 9SQQBO0

Squares and roots of 21328992144

• 21328992144 squared (21328992144²) is 454925905878813716736
• 21328992144 cubed (21328992144³) is 9703111072591301180301585321984
• The square root of 21328992144 is 146044.4868661601
• The cube root of 21328992144 is 2773.2569588547

Scales and comparisons

• 21,328,992,144 seconds is equal to 678 years, 10 weeks, 1 day, 8 hours, 2 minutes, 24 seconds.
• To count from 1 to 21,328,992,144 would take you about one thousand, three hundred fifty-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 21328992144 cubic inches would be around 231.1 feet tall.

Recreational maths with 21328992144

• 21328992144 backwards is 44129982312
• The number of decimal digits it has is: 11
• The sum of 21328992144's digits is 45
• More coming soon!