21308672
21,308,672 is an even composite number composed of five prime numbers multiplied together.
21308672 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21308672:
28 × 7 × 11 × 23 × 47
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 11 × 23 × 47)See below for interesting mathematical facts about the number 21308672 from the Numbermatics database.
Names of 21308672
- Cardinal: 21308672 can be written as Twenty-one million, three hundred eight thousand, six hundred seventy-two.
Scientific notation
- Scientific notation: 2.1308672 × 107
Factors of 21308672
Divisors of 21308672
- Number of divisors d(n): 144
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Complete list of divisors:
1 2 4 7 8 11 14 16 22 23 28 32 44 46 47 56 64 77 88 92 94 112 128 154 161 176 184 188 224 253 256 308 322 329 352 368 376 448 506 517 616 644 658 704 736 752 896 1012 1034 1081 1232 1288 1316 1408 1472 1504 1771 1792 2024 2068 2162 2464 2576 2632 2816 2944 3008 3542 3619 4048 4136 4324 4928 5152 5264 5888 6016 7084 7238 7567 8096 8272 8648 9856 10304 10528 11891 12032 14168 14476 15134 16192 16544 17296 19712 20608 21056 23782 28336 28952 30268 32384 33088 34592 41216 42112 47564 56672 57904 60536 64768 66176 69184 83237 84224 95128 113344 115808 121072 132352 138368 166474 190256 226688 231616 242144 276736 332948 380512 453376 463232 484288 665896 761024 926464 968576 1331792 1522048 1937152 2663584 3044096 5327168 10654336 21308672
- Sum of all divisors σ(n): 56512512
- Sum of proper divisors (its aliquot sum) s(n): 35203840
- 21308672 is an abundant number, because the sum of its proper divisors (35203840) is greater than itself. Its abundance is 13895168
Bases of 21308672
- Binary: 10100010100100101000000002
- Hexadecimal: 0x1452500
- Base-36: COPVK
Squares and roots of 21308672
- 21308672 squared (213086722) is 454059502403584
- 21308672 cubed (213086723) is 9675405005201183080448
-
The
square root of 21308672 is 4616.1317138921 -
The
cube root of 21308672 is 277.2375984487
Scales and comparisons
How big is 21308672?- 21,308,672 seconds is equal to 35 weeks, 1 day, 15 hours, 4 minutes, 32 seconds.
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To count from 1 to 21,308,672 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 21308672 cubic inches would be around 23.1 feet tall.
Recreational maths with 21308672
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The information we have on file for 21308672 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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