21138756

21,138,756 is an even composite number composed of five prime numbers multiplied together.

What does the number 21138756 look like?

This visualization shows the relationship between its 5 prime factors (large circles) and 48 divisors.

21138756 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of forty-eight divisors.

Prime factorization of 21138756:

2² × 3 × 59 × 73 × 409

(2 × 2 × 3 × 59 × 73 × 409)

See below for interesting mathematical facts about the number 21138756 from the Numbermatics database.

Names of 21138756

Cardinal: 21138756 can be written as Twenty-one million, one hundred thirty-eight thousand, seven hundred fifty-six.

Scientific notation

Scientific notation: 2.1138756 × 10⁷

Factors of 21138756

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 546

Divisors of 21138756

Number of divisors d(n): 48
Complete list of divisors:
1 2 3 4 6 12 59 73 118 146 177 219 236 292 354 409 438 708 818 876 1227 1636 2454 4307 4908 8614 12921 17228 24131 25842 29857 48262 51684 59714 72393 89571 96524 119428 144786 179142 289572 358284 1761563 3523126 5284689 7046252 10569378 21138756
Sum of all divisors σ(n): 50971200
Sum of proper divisors (its aliquot sum) s(n): 29832444
21138756 is an abundant number, because the sum of its proper divisors (29832444) is greater than itself. Its abundance is 8693688

Bases of 21138756

Binary: 1010000101000110101000100₂
Hexadecimal: 0x1428D44
Base-36: CL2RO

Squares and roots of 21138756

21138756 squared (21138756²) is 446847005227536
21138756 cubed (21138756³) is 9445789812835607985216
The square root of 21138756 is 4597.6902896999
The cube root of 21138756 is 276.4987306833

Scales and comparisons

How big is 21138756?

21,138,756 seconds is equal to 34 weeks, 6 days, 15 hours, 52 minutes, 36 seconds.
To count from 1 to 21,138,756 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 21138756 cubic inches would be around 23 feet tall.

Recreational maths with 21138756

21138756 backwards is 65783112
The number of decimal digits it has is: 8
The sum of 21138756's digits is 33
More coming soon!

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The information we have on file for 21138756 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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