28987728
28,987,728 is an even composite number composed of six prime numbers multiplied together.
28987728 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred forty divisors.
Prime factorization of 28987728:
24 × 3 × 7 × 112 × 23 × 31
(2 × 2 × 2 × 2 × 3 × 7 × 11 × 11 × 23 × 31)See below for interesting mathematical facts about the number 28987728 from the Numbermatics database.
Names of 28987728
- Cardinal: 28987728 can be written as Twenty-eight million, nine hundred eighty-seven thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.8987728 × 107
Factors of 28987728
Divisors of 28987728
- Number of divisors d(n): 240
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Complete list of divisors:
1 2 3 4 6 7 8 11 12 14 16 21 22 23 24 28 31 33 42 44 46 48 56 62 66 69 77 84 88 92 93 112 121 124 132 138 154 161 168 176 184 186 217 231 242 248 253 264 276 308 322 336 341 363 368 372 434 462 483 484 496 506 528 552 616 644 651 682 713 726 744 759 847 868 924 966 968 1012 1023 1104 1232 1288 1302 1364 1426 1452 1488 1518 1694 1736 1771 1848 1932 1936 2024 2046 2139 2387 2541 2576 2604 2728 2783 2852 2904 3036 3388 3472 3542 3696 3751 3864 4048 4092 4278 4774 4991 5082 5208 5313 5456 5566 5704 5808 6072 6776 7084 7161 7502 7728 7843 8184 8349 8556 9548 9982 10164 10416 10626 11132 11253 11408 12144 13552 14168 14322 14973 15004 15686 16368 16698 17112 19096 19481 19964 20328 21252 22264 22506 23529 26257 28336 28644 29946 30008 31372 33396 34224 38192 38962 39928 40656 42504 44528 45012 47058 52514 54901 57288 58443 59892 60016 62744 66792 77924 78771 79856 85008 86273 90024 94116 105028 109802 114576 116886 119784 125488 133584 155848 157542 164703 172546 180048 188232 210056 219604 233772 239568 258819 311696 315084 329406 345092 376464 420112 439208 467544 517638 603911 630168 658812 690184 878416 935088 1035276 1207822 1260336 1317624 1380368 1811733 2070552 2415644 2635248 3623466 4141104 4831288 7246932 9662576 14493864 28987728
- Sum of all divisors σ(n): 101326848
- Sum of proper divisors (its aliquot sum) s(n): 72339120
- 28987728 is an abundant number, because the sum of its proper divisors (72339120) is greater than itself. Its abundance is 43351392
Bases of 28987728
- Binary: 11011101001010001010100002
- Hexadecimal: 0x1BA5150
- Base-36: H9B2O
Squares and roots of 28987728
- 28987728 squared (289877282) is 840288374601984
- 28987728 cubed (289877283) is 24358050844524420452352
-
The
square root of 28987728 is 5384.0252599705 -
The
cube root of 28987728 is 307.1883391299
Scales and comparisons
How big is 28987728?- 28,987,728 seconds is equal to 47 weeks, 6 days, 12 hours, 8 minutes, 48 seconds.
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To count from 1 to 28,987,728 would take you about nineteen weeks!
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 28987728 cubic inches would be around 25.6 feet tall.
Recreational maths with 28987728
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The information we have on file for 28987728 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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