21466915840

Names of 21466915840

• Cardinal: 21466915840 can be written as Twenty-one billion, four hundred sixty-six million, nine hundred fifteen thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.146691584 × 10¹⁰

Factors of 21466915840

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 4192764

Divisors of 21466915840

• Number of divisors d(n): 44
• Complete list of divisors:
  1 2 4 5 8 10 16 20 32 40 64 80 128 160 256 320 512 640 1024 1280 2560 5120 4192757 8385514 16771028 20963785 33542056 41927570 67084112 83855140 134168224 167710280 268336448 335420560 536672896 670841120 1073345792 1341682240 2146691584 2683364480 4293383168 5366728960 10733457920 21466915840
• Sum of all divisors σ(n): 51495453756
• Sum of proper divisors (its aliquot sum) s(n): 30028537916
• 21466915840 is an abundant number, because the sum of its proper divisors (30028537916) is greater than itself. Its abundance is 8561622076

Bases of 21466915840

• Binary: 10011111111100001110010010000000000₂
• Hexadecimal: 0x4FF872400
• Base-36: 9V0UI9S

Squares and roots of 21466915840

• 21466915840 squared (21466915840²) is 460828475681642905600
• 21466915840 cubed (21466915840³) is 9892566104133314887448264704000
• The square root of 21466915840 is 146515.9235032151
• The cube root of 21466915840 is 2779.2218652699

Scales and comparisons

• 21,466,915,840 seconds is equal to 682 years, 30 weeks, 1 day, 16 hours, 10 minutes, 40 seconds.
• To count from 1 to 21,466,915,840 would take you about one thousand, three hundred sixty-five 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 21466915840 cubic inches would be around 231.6 feet tall.

Recreational maths with 21466915840

• 21466915840 backwards is 04851966412
• The number of decimal digits it has is: 11
• The sum of 21466915840's digits is 46
• More coming soon!