21186990

21,186,990 is an even composite number composed of five prime numbers multiplied together.

What does the number 21186990 look like?

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

21186990 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 21186990:

2 × 3² × 5 × 11 × 21401

(2 × 3 × 3 × 5 × 11 × 21401)

See below for interesting mathematical facts about the number 21186990 from the Numbermatics database.

Names of 21186990

Cardinal: 21186990 can be written as Twenty-one million, one hundred eighty-six thousand, nine hundred ninety.

Scientific notation

Scientific notation: 2.118699 × 10⁷

Factors of 21186990

Number of distinct prime factors ω(n): 5
Total number of prime factors Ω(n): 6
Sum of prime factors: 21422

Divisors of 21186990

Number of divisors d(n): 48
Complete list of divisors:
1 2 3 5 6 9 10 11 15 18 22 30 33 45 55 66 90 99 110 165 198 330 495 990 21401 42802 64203 107005 128406 192609 214010 235411 321015 385218 470822 642030 706233 963045 1177055 1412466 1926090 2118699 2354110 3531165 4237398 7062330 10593495 21186990
Sum of all divisors σ(n): 60096816
Sum of proper divisors (its aliquot sum) s(n): 38909826
21186990 is an abundant number, because the sum of its proper divisors (38909826) is greater than itself. Its abundance is 17722836

Bases of 21186990

Binary: 1010000110100100110101110₂
Hexadecimal: 0x14349AE
Base-36: CM3ZI

Squares and roots of 21186990

21186990 squared (21186990²) is 448888545260100
21186990 cubed (21186990³) is 9510597119540286099000
The square root of 21186990 is 4602.9327607515
The cube root of 21186990 is 276.7088740625

Scales and comparisons

How big is 21186990?

21,186,990 seconds is equal to 35 weeks, 5 hours, 16 minutes, 30 seconds.
To count from 1 to 21,186,990 would take you about three 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 21186990 cubic inches would be around 23.1 feet tall.

Recreational maths with 21186990

21186990 backwards is 09968112
The number of decimal digits it has is: 8
The sum of 21186990's digits is 36
More coming soon!

Copy this link to share with anyone:

Share this page on social media:

Link to this page

HTML: To link to this page, just copy and paste the link below into your blog, web page or email.

<a href="https://numbermatics.com/n/21186990/?utm_source=shared">Number 21186990 - Facts about the integer</a>

BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:

[url=https://numbermatics.com/n/21186990/?utm_source=shared]Number 21186990 - Facts about the integer[/url]

Cite this page

MLA style:
"Number 21186990 - Facts about the integer". Numbermatics.com. 2024. Web. 18 May 2024.

APA style:
Numbermatics. (2024). Number 21186990 - Facts about the integer. Retrieved 18 May 2024, from https://numbermatics.com/n/21186990/

Chicago style:
Numbermatics. 2024. "Number 21186990 - Facts about the integer". https://numbermatics.com/n/21186990/

The information we have on file for 21186990 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!

Keywords: Divisors of 21186990, math, Factors of 21186990, curriculum, school, college, exams, university, Prime factorization of 21186990, STEM, science, technology, engineering, physics, economics, calculator, twenty-one million, one hundred eighty-six thousand, nine hundred ninety.