21004143

Names of 21004143

• Cardinal: 21004143 can be written as Twenty-one million, four thousand, one hundred forty-three.

Scientific notation

• Scientific notation: 2.1004143 × 10⁷

Factors of 21004143

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 3286

Divisors of 21004143

• Number of divisors d(n): 16
• Complete list of divisors:
  1 3 31 71 93 213 2201 3181 6603 9543 98611 225851 295833 677553 7001381 21004143
• Sum of all divisors σ(n): 29325312
• Sum of proper divisors (its aliquot sum) s(n): 8321169
• 21004143 is a deficient number, because the sum of its proper divisors (8321169) is less than itself. Its deficiency is 12682974

Bases of 21004143

• Binary: 1010000000111111101101111₂
• Hexadecimal: 0x1407F6F
• Base-36: CI6WF

Squares and roots of 21004143

• 21004143 squared (21004143²) is 441174023164449
• 21004143 cubed (21004143³) is 9266482270431399312207
• The square root of 21004143 is 4583.0277110225
• The cube root of 21004143 is 275.9105596561

Scales and comparisons

• 21,004,143 seconds is equal to 34 weeks, 5 days, 2 hours, 29 minutes, 3 seconds.
• To count from 1 to 21,004,143 would take you about fifteen hours!

  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 21004143 cubic inches would be around 23 feet tall.

Recreational maths with 21004143

• 21004143 backwards is 34140012
• The number of decimal digits it has is: 8
• The sum of 21004143's digits is 15
• More coming soon!