21289473

21,289,473 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21289473 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 24 divisors.

21289473 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 21289473:

3⁵ × 79 × 1109

(3 × 3 × 3 × 3 × 3 × 79 × 1109)

See below for interesting mathematical facts about the number 21289473 from the Numbermatics database.

Names of 21289473

Cardinal: 21289473 can be written as Twenty-one million, two hundred eighty-nine thousand, four hundred seventy-three.

Scientific notation

Scientific notation: 2.1289473 × 10⁷

Factors of 21289473

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 7
Sum of prime factors: 1191

Divisors of 21289473

Number of divisors d(n): 24
Complete list of divisors:
1 3 9 27 79 81 237 243 711 1109 2133 3327 6399 9981 19197 29943 87611 89829 262833 269487 788499 2365497 7096491 21289473
Sum of all divisors σ(n): 32323200
Sum of proper divisors (its aliquot sum) s(n): 11033727
21289473 is a deficient number, because the sum of its proper divisors (11033727) is less than itself. Its deficiency is 10255746

Bases of 21289473

Binary: 1010001001101101000000001₂
Hexadecimal: 0x144DA01
Base-36: COB29

Squares and roots of 21289473

21289473 squared (21289473²) is 453241660617729
21289473 cubed (21289473³) is 9649276096196304866817
The square root of 21289473 is 4614.0516902177
The cube root of 21289473 is 277.1543102297

Scales and comparisons

How big is 21289473?

21,289,473 seconds is equal to 35 weeks, 1 day, 9 hours, 44 minutes, 33 seconds.
To count from 1 to 21,289,473 would take you about five 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 21289473 cubic inches would be around 23.1 feet tall.

Recreational maths with 21289473

21289473 backwards is 37498212
The number of decimal digits it has is: 8
The sum of 21289473's digits is 36
More coming soon!

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The information we have on file for 21289473 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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