21139446

Names of 21139446

• Cardinal: 21139446 can be written as Twenty-one million, one hundred thirty-nine thousand, four hundred forty-six.

Scientific notation

• Scientific notation: 2.1139446 × 10⁷

Factors of 21139446

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 4655

Divisors of 21139446

• Number of divisors d(n): 16
• Complete list of divisors:
  1 2 3 6 953 1906 2859 3697 5718 7394 11091 22182 3523241 7046482 10569723 21139446
• Sum of all divisors σ(n): 42334704
• Sum of proper divisors (its aliquot sum) s(n): 21195258
• 21139446 is an abundant number, because the sum of its proper divisors (21195258) is greater than itself. Its abundance is 55812

Bases of 21139446

• Binary: 1010000101000111111110110₂
• Hexadecimal: 0x1428FF6
• Base-36: CL3AU

Squares and roots of 21139446

• 21139446 squared (21139446²) is 446876177186916
• 21139446 cubed (21139446³) is 9446714816329242688536
• The square root of 21139446 is 4597.7653267647
• The cube root of 21139446 is 276.5017390923

Scales and comparisons

• 21,139,446 seconds is equal to 34 weeks, 6 days, 16 hours, 4 minutes, 6 seconds.
• To count from 1 to 21,139,446 would take you about three days!

  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 21139446 cubic inches would be around 23 feet tall.

Recreational maths with 21139446

• 21139446 backwards is 64493112
• The number of decimal digits it has is: 8
• The sum of 21139446's digits is 30
• More coming soon!