28745728
28,745,728 is an even composite number composed of three prime numbers multiplied together.
28745728 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eighty-four divisors.
Prime factorization of 28745728:
213 × 112 × 29
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 11 × 11 × 29)See below for interesting mathematical facts about the number 28745728 from the Numbermatics database.
Names of 28745728
- Cardinal: 28745728 can be written as Twenty-eight million, seven hundred forty-five thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.8745728 × 107
Factors of 28745728
Divisors of 28745728
- Number of divisors d(n): 84
-
Complete list of divisors:
1 2 4 8 11 16 22 29 32 44 58 64 88 116 121 128 176 232 242 256 319 352 464 484 512 638 704 928 968 1024 1276 1408 1856 1936 2048 2552 2816 3509 3712 3872 4096 5104 5632 7018 7424 7744 8192 10208 11264 14036 14848 15488 20416 22528 28072 29696 30976 40832 45056 56144 59392 61952 81664 90112 112288 118784 123904 163328 224576 237568 247808 326656 449152 495616 653312 898304 991232 1306624 1796608 2613248 3593216 7186432 14372864 28745728
- Sum of all divisors σ(n): 65368170
- Sum of proper divisors (its aliquot sum) s(n): 36622442
- 28745728 is an abundant number, because the sum of its proper divisors (36622442) is greater than itself. Its abundance is 7876714
Bases of 28745728
- Binary: 11011011010100000000000002
- Hexadecimal: 0x1B6A000
- Base-36: H44CG
Squares and roots of 28745728
- 28745728 squared (287457282) is 826316878249984
- 28745728 cubed (287457283) is 23753080223983156068352
-
The
square root of 28745728 is 5361.5042665283 -
The
cube root of 28745728 is 306.3311095451
Scales and comparisons
How big is 28745728?- 28,745,728 seconds is equal to 47 weeks, 3 days, 16 hours, 55 minutes, 28 seconds.
-
To count from 1 to 28,745,728 would take you about nineteen weeks!
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 28745728 cubic inches would be around 25.5 feet tall.
Recreational maths with 28745728
Link to this page
HTML: To link to this page, just copy and paste the link below into your blog, web page or email.
BBCODE: To link to this page in a forum post or comment box, just copy and paste the link code below:
Cite this page
MLA style:
"Number 28745728 - Facts about the integer". Numbermatics.com. 2024. Web. 27 April 2024.
APA style:
Numbermatics. (2024). Number 28745728 - Facts about the integer. Retrieved 27 April 2024, from https://numbermatics.com/n/28745728/
Chicago style:
Numbermatics. 2024. "Number 28745728 - Facts about the integer". https://numbermatics.com/n/28745728/
The information we have on file for 28745728 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 28745728, math, Factors of 28745728, curriculum, school, college, exams, university, Prime factorization of 28745728, STEM, science, technology, engineering, physics, economics, calculator, twenty-eight million, seven hundred forty-five thousand, seven hundred twenty-eight.