21210425418

Names of 21210425418

• Cardinal: 21210425418 can be written as Twenty-one billion, two hundred ten million, four hundred twenty-five thousand, four hundred eighteen.

Scientific notation

• Scientific notation: 2.1210425418 × 10¹⁰

Factors of 21210425418

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2240

Divisors of 21210425418

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 6 7 13 14 21 26 39 42 53 78 91 106 159 182 273 318 371 421 546 689 742 842 1113 1263 1378 1741 2067 2226 2526 2947 3482 4134 4823 5223 5473 5894 8841 9646 10446 10946 12187 14469 16419 17682 22313 22633 24374 28938 32838 36561 38311 44626 45266 66939 67899 73122 76622 92273 114933 133878 135798 156191 158431 184546 229866 276819 290069 312382 316862 468573 475293 553638 580138 645911 732961 870207 937146 950586 1199549 1291822 1465922 1740414 1937733 2030483 2198883 2399098 3598647 3875466 4060966 4397766 5130727 6091449 7197294 8396843 9528493 10261454 12182898 15392181 16793686 19056986 25190529 28585479 30784362 38846933 50381058 57170958 66699451 77693866 116540799 133398902 200098353 233081598 271928531 400196706 505010129 543857062 815785593 1010020258 1515030387 1631571186 3030060774 3535070903 7070141806 10605212709 21210425418
• Sum of all divisors σ(n): 53352359424
• Sum of proper divisors (its aliquot sum) s(n): 32141934006
• 21210425418 is an abundant number, because the sum of its proper divisors (32141934006) is greater than itself. Its abundance is 10931508588

Bases of 21210425418

• Binary: 10011110000001111010110100001001010₂
• Hexadecimal: 0x4F03D684A
• Base-36: 9QS50ZU

Squares and roots of 21210425418

• 21210425418 squared (21210425418²) is 449882146412540474724
• 21210425418 cubed (21210425418³) is 9542191713372945999039716134632
• The square root of 21210425418 is 145637.9944176655
• The cube root of 21210425418 is 2768.1086115631

Scales and comparisons

• 21,210,425,418 seconds is equal to 674 years, 22 weeks, 1 day, 50 minutes, 18 seconds.
• To count from 1 to 21,210,425,418 would take you about one thousand, three hundred forty-eight 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 21210425418 cubic inches would be around 230.7 feet tall.

Recreational maths with 21210425418

• 21210425418 backwards is 81452401212
• The number of decimal digits it has is: 11
• The sum of 21210425418's digits is 30
• More coming soon!