21144139

Names of 21144139

• Cardinal: 21144139 can be written as Twenty-one million, one hundred forty-four thousand, one hundred thirty-nine.

Scientific notation

• Scientific notation: 2.1144139 × 10⁷

Factors of 21144139

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 682100

Divisors of 21144139

• Number of divisors d(n): 4
• Complete list of divisors:
  1 31 682069 21144139
• Sum of all divisors σ(n): 21826240
• Sum of proper divisors (its aliquot sum) s(n): 682101
• 21144139 is a deficient number, because the sum of its proper divisors (682101) is less than itself. Its deficiency is 20462038

Bases of 21144139

• Binary: 1010000101010001001001011₂
• Hexadecimal: 0x142A24B
• Base-36: CL6X7

Squares and roots of 21144139

• 21144139 squared (21144139²) is 447074614051321
• 21144139 cubed (21144139³) is 9453007782872484357619
• The square root of 21144139 is 4598.2756550691
• The cube root of 21144139 is 276.5221988941

Scales and comparisons

• 21,144,139 seconds is equal to 34 weeks, 6 days, 17 hours, 22 minutes, 19 seconds.
• To count from 1 to 21,144,139 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 21144139 cubic inches would be around 23 feet tall.

Recreational maths with 21144139

• 21144139 backwards is 93144112
• The number of decimal digits it has is: 8
• The sum of 21144139's digits is 25
• More coming soon!