21328715472

Names of 21328715472

• Cardinal: 21328715472 can be written as Twenty-one billion, three hundred twenty-eight million, seven hundred fifteen thousand, four hundred seventy-two.

Scientific notation

• Scientific notation: 2.1328715472 × 10¹⁰

Factors of 21328715472

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 5382

Divisors of 21328715472

• Number of divisors d(n): 80
• Complete list of divisors:
  1 2 3 4 6 8 12 16 24 48 223 421 446 669 842 892 1263 1338 1684 1784 2526 2676 3368 3568 4733 5052 5352 6736 9466 10104 10704 14199 18932 20208 28398 37864 56796 75728 93883 113592 187766 227184 281649 375532 563298 751064 1055459 1126596 1502128 1992593 2110918 2253192 3166377 3985186 4221836 4506384 5977779 6332754 7970372 8443672 11955558 12665508 15940744 16887344 23911116 25331016 31881488 47822232 50662032 95644464 444348239 888696478 1333044717 1777392956 2666089434 3554785912 5332178868 7109571824 10664357736 21328715472
• Sum of all divisors σ(n): 55489448448
• Sum of proper divisors (its aliquot sum) s(n): 34160732976
• 21328715472 is an abundant number, because the sum of its proper divisors (34160732976) is greater than itself. Its abundance is 12832017504

Bases of 21328715472

• Binary: 10011110111010010100101111011010000₂
• Hexadecimal: 0x4F74A5ED0
• Base-36: 9SQKE6O

Squares and roots of 21328715472

• 21328715472 squared (21328715472²) is 454914103685532182784
• 21328715472 cubed (21328715472³) is 9702733481708622489499032834048
• The square root of 21328715472 is 146043.5396448607
• The cube root of 21328715472 is 2773.2449675729

Scales and comparisons

• 21,328,715,472 seconds is equal to 678 years, 9 weeks, 5 days, 3 hours, 11 minutes, 12 seconds.
• To count from 1 to 21,328,715,472 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 21328715472 cubic inches would be around 231.1 feet tall.

Recreational maths with 21328715472

• 21328715472 backwards is 27451782312
• The number of decimal digits it has is: 11
• The sum of 21328715472's digits is 42
• More coming soon!