21720429

21,720,429 is an odd composite number composed of four prime numbers multiplied together.

What does the number 21720429 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 24 divisors.

21720429 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of twenty-four divisors.

Prime factorization of 21720429:

3² × 31 × 127 × 613

(3 × 3 × 31 × 127 × 613)

See below for interesting mathematical facts about the number 21720429 from the Numbermatics database.

Names of 21720429

Cardinal: 21720429 can be written as Twenty-one million, seven hundred twenty thousand, four hundred twenty-nine.

Scientific notation

Scientific notation: 2.1720429 × 10⁷

Factors of 21720429

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 5
Sum of prime factors: 774

Divisors of 21720429

Number of divisors d(n): 24
Complete list of divisors:
1 3 9 31 93 127 279 381 613 1143 1839 3937 5517 11811 19003 35433 57009 77851 171027 233553 700659 2413381 7240143 21720429
Sum of all divisors σ(n): 32694272
Sum of proper divisors (its aliquot sum) s(n): 10973843
21720429 is a deficient number, because the sum of its proper divisors (10973843) is less than itself. Its deficiency is 10746586

Bases of 21720429

Binary: 1010010110110110101101101₂
Hexadecimal: 0x14B6D6D
Base-36: CXJL9

Squares and roots of 21720429

21720429 squared (21720429²) is 471777035944041
21720429 cubed (21720429³) is 10247199613052990513589
The square root of 21720429 is 4660.5181042455
The cube root of 21720429 is 279.0119469197

Scales and comparisons

How big is 21720429?

21,720,429 seconds is equal to 35 weeks, 6 days, 9 hours, 27 minutes, 9 seconds.
To count from 1 to 21,720,429 would take you about six 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 21720429 cubic inches would be around 23.3 feet tall.

Recreational maths with 21720429

21720429 backwards is 92402712
The number of decimal digits it has is: 8
The sum of 21720429's digits is 27
More coming soon!

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The information we have on file for 21720429 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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