721280
721,280 is an even composite number composed of four prime numbers multiplied together.
721280 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 721280:
27 × 5 × 72 × 23
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 7 × 7 × 23)See below for interesting mathematical facts about the number 721280 from the Numbermatics database.
Names of 721280
- Cardinal: 721280 can be written as Seven hundred twenty-one thousand, two hundred eighty.
Scientific notation
- Scientific notation: 7.2128 × 105
Factors of 721280
Divisors of 721280
- Number of divisors d(n): 96
-
Complete list of divisors:
1 2 4 5 7 8 10 14 16 20 23 28 32 35 40 46 49 56 64 70 80 92 98 112 115 128 140 160 161 184 196 224 230 245 280 320 322 368 392 448 460 490 560 640 644 736 784 805 896 920 980 1120 1127 1288 1472 1568 1610 1840 1960 2240 2254 2576 2944 3136 3220 3680 3920 4480 4508 5152 5635 6272 6440 7360 7840 9016 10304 11270 12880 14720 15680 18032 20608 22540 25760 31360 36064 45080 51520 72128 90160 103040 144256 180320 360640 721280
- Sum of all divisors σ(n): 2093040
- Sum of proper divisors (its aliquot sum) s(n): 1371760
- 721280 is an abundant number, because the sum of its proper divisors (1371760) is greater than itself. Its abundance is 650480
Bases of 721280
- Binary: 101100000001100000002
- Hexadecimal: 0xB0180
- Base-36: FGJK
Squares and roots of 721280
- 721280 squared (7212802) is 520244838400
- 721280 cubed (7212803) is 375242197041152000
-
The
square root of 721280 is 849.2820497337 -
The
cube root of 721280 is 89.6811764329
Scales and comparisons
How big is 721280?- 721,280 seconds is equal to 1 week, 1 day, 8 hours, 21 minutes, 20 seconds.
-
To count from 1 to 721,280 would take you about eight hours!
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 721280 cubic inches would be around 7.5 feet tall.
Recreational maths with 721280
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 721280 - Facts about the integer". Numbermatics.com. 2024. Web. 27 April 2024.
APA style:
Numbermatics. (2024). Number 721280 - Facts about the integer. Retrieved 27 April 2024, from https://numbermatics.com/n/721280/
Chicago style:
Numbermatics. 2024. "Number 721280 - Facts about the integer". https://numbermatics.com/n/721280/
The information we have on file for 721280 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 721280, math, Factors of 721280, curriculum, school, college, exams, university, Prime factorization of 721280, STEM, science, technology, engineering, physics, economics, calculator, seven hundred twenty-one thousand, two hundred eighty.