129745728
129,745,728 is an even composite number composed of four prime numbers multiplied together.
129745728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty-six divisors.
Prime factorization of 129745728:
26 × 32 × 72 × 4597
(2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 7 × 7 × 4597)See below for interesting mathematical facts about the number 129745728 from the Numbermatics database.
Names of 129745728
- Cardinal: 129745728 can be written as One hundred twenty-nine million, seven hundred forty-five thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 1.29745728 × 108
Factors of 129745728
Divisors of 129745728
- Number of divisors d(n): 126
-
Complete list of divisors:
1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 32 36 42 48 49 56 63 64 72 84 96 98 112 126 144 147 168 192 196 224 252 288 294 336 392 441 448 504 576 588 672 784 882 1008 1176 1344 1568 1764 2016 2352 3136 3528 4032 4597 4704 7056 9194 9408 13791 14112 18388 27582 28224 32179 36776 41373 55164 64358 73552 82746 96537 110328 128716 147104 165492 193074 220656 225253 257432 289611 294208 330984 386148 441312 450506 514864 579222 661968 675759 772296 882624 901012 1029728 1158444 1323936 1351518 1544592 1802024 2027277 2059456 2316888 2647872 2703036 3089184 3604048 4054554 4633776 5406072 6178368 7208096 8109108 9267552 10812144 14416192 16218216 18535104 21624288 32436432 43248576 64872864 129745728
- Sum of all divisors σ(n): 432703986
- Sum of proper divisors (its aliquot sum) s(n): 302958258
- 129745728 is an abundant number, because the sum of its proper divisors (302958258) is greater than itself. Its abundance is 173212530
Bases of 129745728
- Binary: 1111011101111000011010000002
- Hexadecimal: 0x7BBC340
- Base-36: 258WG0
Squares and roots of 129745728
- 129745728 squared (1297457282) is 16833953934249984
- 129745728 cubed (1297457283) is 2184133608317728308068352
-
The
square root of 129745728 is 11390.5982283637 -
The
cube root of 129745728 is 506.2492067661
Scales and comparisons
How big is 129745728?- 129,745,728 seconds is equal to 4 years, 6 weeks, 3 days, 16 hours, 28 minutes, 48 seconds.
-
To count from 1 to 129,745,728 would take you about six years!
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 129745728 cubic inches would be around 42.2 feet tall.
Recreational maths with 129745728
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 129745728 - Facts about the integer". Numbermatics.com. 2024. Web. 13 June 2024.
APA style:
Numbermatics. (2024). Number 129745728 - Facts about the integer. Retrieved 13 June 2024, from https://numbermatics.com/n/129745728/
Chicago style:
Numbermatics. 2024. "Number 129745728 - Facts about the integer". https://numbermatics.com/n/129745728/
The information we have on file for 129745728 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 129745728, math, Factors of 129745728, curriculum, school, college, exams, university, Prime factorization of 129745728, STEM, science, technology, engineering, physics, economics, calculator, one hundred twenty-nine million, seven hundred forty-five thousand, seven hundred twenty-eight.