21028864

21,028,864 is an even composite number composed of three prime numbers multiplied together.

What does the number 21028864 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 56 divisors.

21028864 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of fifty-six divisors.

Prime factorization of 21028864:

2¹³ × 17 × 151

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 17 × 151)

See below for interesting mathematical facts about the number 21028864 from the Numbermatics database.

Names of 21028864

Cardinal: 21028864 can be written as Twenty-one million, twenty-eight thousand, eight hundred sixty-four.

Scientific notation

Scientific notation: 2.1028864 × 10⁷

Factors of 21028864

Number of distinct prime factors ω(n): 3
Total number of prime factors Ω(n): 15
Sum of prime factors: 170

Divisors of 21028864

Number of divisors d(n): 56
Complete list of divisors:
1 2 4 8 16 17 32 34 64 68 128 136 151 256 272 302 512 544 604 1024 1088 1208 2048 2176 2416 2567 4096 4352 4832 5134 8192 8704 9664 10268 17408 19328 20536 34816 38656 41072 69632 77312 82144 139264 154624 164288 309248 328576 618496 657152 1236992 1314304 2628608 5257216 10514432 21028864
Sum of all divisors σ(n): 44823888
Sum of proper divisors (its aliquot sum) s(n): 23795024
21028864 is an abundant number, because the sum of its proper divisors (23795024) is greater than itself. Its abundance is 2766160

Bases of 21028864

Binary: 1010000001110000000000000₂
Hexadecimal: 0x140E000
Base-36: CIPZ4

Squares and roots of 21028864

21028864 squared (21028864²) is 442213121130496
21028864 cubed (21028864³) is 9299239583268726636544
The square root of 21028864 is 4585.7239341243
The cube root of 21028864 is 276.0187622897

Scales and comparisons

How big is 21028864?

21,028,864 seconds is equal to 34 weeks, 5 days, 9 hours, 21 minutes, 4 seconds.
To count from 1 to 21,028,864 would take you about two 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 21028864 cubic inches would be around 23 feet tall.

Recreational maths with 21028864

21028864 backwards is 46882012
The number of decimal digits it has is: 8
The sum of 21028864's digits is 31
More coming soon!

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The information we have on file for 21028864 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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