21280000
21,280,000 is an even composite number composed of four prime numbers multiplied together.
21280000 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred eighty divisors.
Prime factorization of 21280000:
28 × 54 × 7 × 19
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 5 × 5 × 7 × 19)See below for interesting mathematical facts about the number 21280000 from the Numbermatics database.
Names of 21280000
- Cardinal: 21280000 can be written as Twenty-one million, two hundred eighty thousand.
Scientific notation
- Scientific notation: 2.128 × 107
Factors of 21280000
Divisors of 21280000
- Number of divisors d(n): 180
-
Complete list of divisors:
1 2 4 5 7 8 10 14 16 19 20 25 28 32 35 38 40 50 56 64 70 76 80 95 100 112 125 128 133 140 152 160 175 190 200 224 250 256 266 280 304 320 350 380 400 448 475 500 532 560 608 625 640 665 700 760 800 875 896 950 1000 1064 1120 1216 1250 1280 1330 1400 1520 1600 1750 1792 1900 2000 2128 2240 2375 2432 2500 2660 2800 3040 3200 3325 3500 3800 4000 4256 4375 4480 4750 4864 5000 5320 5600 6080 6400 6650 7000 7600 8000 8512 8750 8960 9500 10000 10640 11200 11875 12160 13300 14000 15200 16000 16625 17024 17500 19000 20000 21280 22400 23750 24320 26600 28000 30400 32000 33250 34048 35000 38000 40000 42560 44800 47500 53200 56000 60800 66500 70000 76000 80000 83125 85120 95000 106400 112000 121600 133000 140000 152000 160000 166250 170240 190000 212800 224000 266000 280000 304000 332500 380000 425600 532000 560000 608000 665000 760000 851200 1064000 1120000 1330000 1520000 2128000 2660000 3040000 4256000 5320000 10640000 21280000
- Sum of all divisors σ(n): 63854560
- Sum of proper divisors (its aliquot sum) s(n): 42574560
- 21280000 is an abundant number, because the sum of its proper divisors (42574560) is greater than itself. Its abundance is 21294560
Bases of 21280000
- Binary: 10100010010110101000000002
- Hexadecimal: 0x144B500
- Base-36: CO3R4
Squares and roots of 21280000
- 21280000 squared (212800002) is 452838400000000
- 21280000 cubed (212800003) is 9636401152000000000000
-
The
square root of 21280000 is 4613.0250378683 -
The
cube root of 21280000 is 277.1131964471
Scales and comparisons
How big is 21280000?- 21,280,000 seconds is equal to 35 weeks, 1 day, 7 hours, 6 minutes, 40 seconds.
-
To count from 1 to 21,280,000 would take you about five 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 21280000 cubic inches would be around 23.1 feet tall.
Recreational maths with 21280000
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 21280000 - Facts about the integer". Numbermatics.com. 2024. Web. 27 April 2024.
APA style:
Numbermatics. (2024). Number 21280000 - Facts about the integer. Retrieved 27 April 2024, from https://numbermatics.com/n/21280000/
Chicago style:
Numbermatics. 2024. "Number 21280000 - Facts about the integer". https://numbermatics.com/n/21280000/
The information we have on file for 21280000 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 21280000, math, Factors of 21280000, curriculum, school, college, exams, university, Prime factorization of 21280000, STEM, science, technology, engineering, physics, economics, calculator, twenty-one million, two hundred eighty thousand.