21720069

21,720,069 is an odd composite number composed of three prime numbers multiplied together.

What does the number 21720069 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 36 divisors.

21720069 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of thirty-six divisors.

Prime factorization of 21720069:

3⁵ × 7 × 113²

(3 × 3 × 3 × 3 × 3 × 7 × 113 × 113)

See below for interesting mathematical facts about the number 21720069 from the Numbermatics database.

Names of 21720069

Cardinal: 21720069 can be written as Twenty-one million, seven hundred twenty thousand and sixty-nine.

Scientific notation

Scientific notation: 2.1720069 × 10⁷

Factors of 21720069

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 8
Sum of prime factors: 123

Divisors of 21720069

Number of divisors d(n): 36
Complete list of divisors:
1 3 7 9 21 27 63 81 113 189 243 339 567 791 1017 1701 2373 3051 7119 9153 12769 21357 27459 38307 64071 89383 114921 192213 268149 344763 804447 1034289 2413341 3102867 7240023 21720069
Sum of all divisors σ(n): 37515296
Sum of proper divisors (its aliquot sum) s(n): 15795227
21720069 is a deficient number, because the sum of its proper divisors (15795227) is less than itself. Its deficiency is 5924842

Bases of 21720069

Binary: 1010010110110110000000101₂
Hexadecimal: 0x14B6C05
Base-36: CXJB9

Squares and roots of 21720069

21720069 squared (21720069²) is 471761397364761
21720069 cubed (21720069³) is 10246690102299027088509
The square root of 21720069 is 4660.4794817701
The cube root of 21720069 is 279.0104054391

Scales and comparisons

How big is 21720069?

21,720,069 seconds is equal to 35 weeks, 6 days, 9 hours, 21 minutes, 9 seconds.
To count from 1 to 21,720,069 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 21720069 cubic inches would be around 23.3 feet tall.

Recreational maths with 21720069

21720069 backwards is 96002712
21720069 is a Harshad number.
The number of decimal digits it has is: 8
The sum of 21720069's digits is 27
More coming soon!

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The information we have on file for 21720069 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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