21067497420

Names of 21067497420

• Cardinal: 21067497420 can be written as Twenty-one billion, sixty-seven million, four hundred ninety-seven thousand, four hundred twenty.

Scientific notation

• Scientific notation: 2.106749742 × 10¹⁰

Factors of 21067497420

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 4749

Divisors of 21067497420

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 20 30 60 67 134 201 268 335 402 670 804 1005 1340 1871 2010 2801 3742 4020 5602 5613 7484 8403 9355 11204 11226 14005 16806 18710 22452 28010 28065 33612 37420 42015 56020 56130 84030 112260 125357 168060 187667 250714 375334 376071 501428 563001 626785 750668 752142 938335 1126002 1253570 1504284 1876670 1880355 2252004 2507140 2815005 3753340 3760710 5240671 5630010 7521420 10481342 11260020 15722013 20962684 26203355 31444026 52406710 62888052 78610065 104813420 157220130 314440260 351124957 702249914 1053374871 1404499828 1755624785 2106749742 3511249570 4213499484 5266874355 7022499140 10533748710 21067497420
• Sum of all divisors σ(n): 59922809856
• Sum of proper divisors (its aliquot sum) s(n): 38855312436
• 21067497420 is an abundant number, because the sum of its proper divisors (38855312436) is greater than itself. Its abundance is 17787815016

Bases of 21067497420

• Binary: 10011100111101110000111111111001100₂
• Hexadecimal: 0x4E7B87FCC
• Base-36: 9OF1L1O

Squares and roots of 21067497420

• 21067497420 squared (21067497420²) is 443839447541706656400
• 21067497420 cubed (21067497420³) is 9350586415979130326103826488000
• The square root of 21067497420 is 145146.4688512951
• The cube root of 21067497420 is 2761.8768923383

Scales and comparisons

• 21,067,497,420 seconds is equal to 669 years, 45 weeks, 5 days, 18 hours, 37 minutes.
• To count from 1 to 21,067,497,420 would take you about one thousand, three hundred thirty-nine 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 21067497420 cubic inches would be around 230.2 feet tall.

Recreational maths with 21067497420

• 21067497420 backwards is 02479476012
• The number of decimal digits it has is: 11
• The sum of 21067497420's digits is 42
• More coming soon!