21140389

Names of 21140389

• Cardinal: 21140389 can be written as Twenty-one million, one hundred forty thousand, three hundred eighty-nine.

Scientific notation

• Scientific notation: 2.1140389 × 10⁷

Factors of 21140389

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 21140389

Divisors of 21140389

• Number of divisors d(n): 2
• Complete list of divisors:
  1 21140389
• Sum of all divisors σ(n): 21140390
• Sum of proper divisors (its aliquot sum) s(n): 1
• 21140389 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 21140388

Bases of 21140389

• Binary: 1010000101001001110100101₂
• Hexadecimal: 0x14293A5
• Base-36: CL411

Squares and roots of 21140389

• 21140389 squared (21140389²) is 446916047071321
• 21140389 cubed (21140389³) is 9447979085430036683869
• The square root of 21140389 is 4597.8678754397
• The cube root of 21140389 is 276.5058504779

Scales and comparisons

• 21,140,389 seconds is equal to 34 weeks, 6 days, 16 hours, 19 minutes, 49 seconds.
• To count from 1 to 21,140,389 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 21140389 cubic inches would be around 23 feet tall.

Recreational maths with 21140389

• 21140389 backwards is 98304112
• The number of decimal digits it has is: 8
• The sum of 21140389's digits is 28
• More coming soon!