28756728
28,756,728 is an even composite number composed of six prime numbers multiplied together.
28756728 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 28756728:
23 × 33 × 72 × 11 × 13 × 19
(2 × 2 × 2 × 3 × 3 × 3 × 7 × 7 × 11 × 13 × 19)See below for interesting mathematical facts about the number 28756728 from the Numbermatics database.
Names of 28756728
- Cardinal: 28756728 can be written as Twenty-eight million, seven hundred fifty-six thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.8756728 × 107
Factors of 28756728
Divisors of 28756728
- Number of divisors d(n): 384
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Complete list of divisors:
1 2 3 4 6 7 8 9 11 12 13 14 18 19 21 22 24 26 27 28 33 36 38 39 42 44 49 52 54 56 57 63 66 72 76 77 78 84 88 91 98 99 104 108 114 117 126 132 133 143 147 152 154 156 168 171 182 189 196 198 209 216 228 231 234 247 252 264 266 273 286 294 297 308 312 342 351 364 378 392 396 399 418 429 441 456 462 468 494 504 513 532 539 546 572 588 594 616 627 637 684 693 702 728 741 756 792 798 819 836 858 882 924 931 936 988 1001 1026 1064 1078 1092 1144 1176 1188 1197 1254 1274 1287 1323 1368 1386 1404 1463 1482 1512 1596 1617 1638 1672 1716 1729 1764 1848 1862 1881 1911 1976 2002 2052 2079 2156 2184 2223 2376 2394 2457 2508 2548 2574 2646 2717 2772 2793 2808 2926 2964 3003 3192 3234 3276 3432 3458 3528 3591 3724 3762 3822 3861 4004 4104 4158 4312 4389 4446 4788 4851 4914 5016 5096 5148 5187 5292 5434 5544 5586 5643 5733 5852 5928 6006 6468 6552 6669 6916 7007 7182 7448 7524 7644 7722 8008 8151 8316 8379 8778 8892 9009 9576 9702 9828 10241 10296 10374 10584 10868 11172 11286 11466 11704 12012 12103 12936 13167 13338 13832 14014 14364 14553 15048 15288 15444 15561 16302 16632 16758 17199 17556 17784 18018 19019 19404 19656 20482 20748 21021 21736 22344 22572 22932 24024 24206 24453 25137 26334 26676 27027 28028 28728 29106 30723 30888 31122 32604 33516 34398 35112 36036 36309 38038 38808 39501 40964 41496 42042 45144 45864 46683 48412 48906 50274 52668 53352 54054 56056 57057 58212 61446 62244 63063 65208 67032 68796 72072 72618 73359 76076 79002 81928 84084 92169 93366 96824 97812 100548 105336 108108 108927 114114 116424 122892 124488 126126 133133 137592 145236 146718 152152 158004 168168 171171 184338 186732 189189 195624 201096 216216 217854 228228 245784 252252 266266 276507 290472 293436 316008 326781 342342 368676 373464 378378 399399 435708 456456 504504 513513 532532 553014 586872 653562 684684 737352 756756 798798 871416 1027026 1065064 1106028 1198197 1307124 1369368 1513512 1597596 2054052 2212056 2396394 2614248 3195192 3594591 4108104 4792788 7189182 9585576 14378364 28756728
- Sum of all divisors σ(n): 114912000
- Sum of proper divisors (its aliquot sum) s(n): 86155272
- 28756728 is an abundant number, because the sum of its proper divisors (86155272) is greater than itself. Its abundance is 57398544
Bases of 28756728
- Binary: 11011011011001010111110002
- Hexadecimal: 0x1B6CAF8
- Base-36: H4CU0
Squares and roots of 28756728
- 28756728 squared (287567282) is 826949405265984
- 28756728 cubed (287567283) is 23780359116995669540352
-
The
square root of 28756728 is 5362.5299999161 -
The
cube root of 28756728 is 306.3701786837
Scales and comparisons
How big is 28756728?- 28,756,728 seconds is equal to 47 weeks, 3 days, 19 hours, 58 minutes, 48 seconds.
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To count from 1 to 28,756,728 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 28756728 cubic inches would be around 25.5 feet tall.
Recreational maths with 28756728
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The information we have on file for 28756728 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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