21129760

21,129,760 is an even composite number composed of four prime numbers multiplied together.

What does the number 21129760 look like?

This visualization shows the relationship between its 4 prime factors (large circles) and 48 divisors.

21129760 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 21129760:

2⁵ × 5 × 41 × 3221

(2 × 2 × 2 × 2 × 2 × 5 × 41 × 3221)

See below for interesting mathematical facts about the number 21129760 from the Numbermatics database.

Names of 21129760

Cardinal: 21129760 can be written as Twenty-one million, one hundred twenty-nine thousand, seven hundred sixty.

Scientific notation

Scientific notation: 2.112976 × 10⁷

Factors of 21129760

Number of distinct prime factors ω(n): 4
Total number of prime factors Ω(n): 8
Sum of prime factors: 3269

Divisors of 21129760

Number of divisors d(n): 48
Complete list of divisors:
1 2 4 5 8 10 16 20 32 40 41 80 82 160 164 205 328 410 656 820 1312 1640 3221 3280 6442 6560 12884 16105 25768 32210 51536 64420 103072 128840 132061 257680 264122 515360 528244 660305 1056488 1320610 2112976 2641220 4225952 5282440 10564880 21129760
Sum of all divisors σ(n): 51152472
Sum of proper divisors (its aliquot sum) s(n): 30022712
21129760 is an abundant number, because the sum of its proper divisors (30022712) is greater than itself. Its abundance is 8892952

Bases of 21129760

Binary: 1010000100110101000100000₂
Hexadecimal: 0x1426A20
Base-36: CKVTS

Squares and roots of 21129760

21129760 squared (21129760²) is 446466757657600
21129760 cubed (21129760³) is 9433735437283250176000
The square root of 21129760 is 4596.7118682815
The cube root of 21129760 is 276.4595020187

Scales and comparisons

How big is 21129760?

21,129,760 seconds is equal to 34 weeks, 6 days, 13 hours, 22 minutes, 40 seconds.
To count from 1 to 21,129,760 would take you about two 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 21129760 cubic inches would be around 23 feet tall.

Recreational maths with 21129760

21129760 backwards is 06792112
The number of decimal digits it has is: 8
The sum of 21129760's digits is 28
More coming soon!

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The information we have on file for 21129760 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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