21408491076

Names of 21408491076

• Cardinal: 21408491076 can be written as Twenty-one billion, four hundred eight million, four hundred ninety-one thousand and seventy-six.

Scientific notation

• Scientific notation: 2.1408491076 × 10¹⁰

Factors of 21408491076

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1945662

Divisors of 21408491076

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 6 7 12 14 21 28 42 84 131 262 393 524 786 917 1572 1834 2751 3668 5502 11004 1945519 3891038 5836557 7782076 11673114 13618633 23346228 27237266 40855899 54474532 81711798 163423596 254862989 509725978 764588967 1019451956 1529177934 1784040923 3058355868 3568081846 5352122769 7136163692 10704245538 21408491076
• Sum of all divisors σ(n): 57525135360
• Sum of proper divisors (its aliquot sum) s(n): 36116644284
• 21408491076 is an abundant number, because the sum of its proper divisors (36116644284) is greater than itself. Its abundance is 14708153208

Bases of 21408491076

• Binary: 10011111100000010111010011001000100₂
• Hexadecimal: 0x4FC0BA644
• Base-36: 9U229FO

Squares and roots of 21408491076

• 21408491076 squared (21408491076²) is 458323490151171637776
• 21408491076 cubed (21408491076³) is 9812014348822531898271800486976
• The square root of 21408491076 is 146316.4074053215
• The cube root of 21408491076 is 2776.6982468499

Scales and comparisons

• 21,408,491,076 seconds is equal to 680 years, 37 weeks, 4 days, 11 hours, 4 minutes, 36 seconds.
• To count from 1 to 21,408,491,076 would take you about one thousand, three hundred sixty-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 21408491076 cubic inches would be around 231.4 feet tall.

Recreational maths with 21408491076

• 21408491076 backwards is 67019480412
• 21408491076 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21408491076's digits is 42
• More coming soon!