21308520
21,308,520 is an even composite number composed of six prime numbers multiplied together.
21308520 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 21308520:
23 × 3 × 5 × 41 × 61 × 71
(2 × 2 × 2 × 3 × 5 × 41 × 61 × 71)See below for interesting mathematical facts about the number 21308520 from the Numbermatics database.
Names of 21308520
- Cardinal: 21308520 can be written as Twenty-one million, three hundred eight thousand, five hundred twenty.
Scientific notation
- Scientific notation: 2.130852 × 107
Factors of 21308520
Divisors of 21308520
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 20 24 30 40 41 60 61 71 82 120 122 123 142 164 183 205 213 244 246 284 305 328 355 366 410 426 488 492 568 610 615 710 732 820 852 915 984 1065 1220 1230 1420 1464 1640 1704 1830 2130 2440 2460 2501 2840 2911 3660 4260 4331 4920 5002 5822 7320 7503 8520 8662 8733 10004 11644 12505 12993 14555 15006 17324 17466 20008 21655 23288 25010 25986 29110 30012 34648 34932 37515 43310 43665 50020 51972 58220 60024 64965 69864 75030 86620 87330 100040 103944 116440 129930 150060 173240 174660 177571 259860 300120 349320 355142 519720 532713 710284 887855 1065426 1420568 1775710 2130852 2663565 3551420 4261704 5327130 7102840 10654260 21308520
- Sum of all divisors σ(n): 67495680
- Sum of proper divisors (its aliquot sum) s(n): 46187160
- 21308520 is an abundant number, because the sum of its proper divisors (46187160) is greater than itself. Its abundance is 24878640
Bases of 21308520
- Binary: 10100010100100100011010002
- Hexadecimal: 0x1452468
- Base-36: COPRC
Squares and roots of 21308520
- 21308520 squared (213085202) is 454053024590400
- 21308520 cubed (213085203) is 9675197955545030208000
-
The
square root of 21308520 is 4616.1152498611 -
The
cube root of 21308520 is 277.2369392459
Scales and comparisons
How big is 21308520?- 21,308,520 seconds is equal to 35 weeks, 1 day, 15 hours, 2 minutes.
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To count from 1 to 21,308,520 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 21308520 cubic inches would be around 23.1 feet tall.
Recreational maths with 21308520
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The information we have on file for 21308520 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!
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