28021728
28,021,728 is an even composite number composed of five prime numbers multiplied together.
28021728 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 28021728:
25 × 3 × 73 × 23 × 37
(2 × 2 × 2 × 2 × 2 × 3 × 7 × 7 × 7 × 23 × 37)See below for interesting mathematical facts about the number 28021728 from the Numbermatics database.
Names of 28021728
- Cardinal: 28021728 can be written as Twenty-eight million, twenty-one thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.8021728 × 107
Factors of 28021728
Divisors of 28021728
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 3 4 6 7 8 12 14 16 21 23 24 28 32 37 42 46 48 49 56 69 74 84 92 96 98 111 112 138 147 148 161 168 184 196 222 224 259 276 294 296 322 336 343 368 392 444 483 518 552 588 592 644 672 686 736 777 784 851 888 966 1029 1036 1104 1127 1176 1184 1288 1372 1554 1568 1702 1776 1813 1932 2058 2072 2208 2254 2352 2553 2576 2744 3108 3381 3404 3552 3626 3864 4116 4144 4508 4704 5106 5152 5439 5488 5957 6216 6762 6808 7252 7728 7889 8232 8288 9016 10212 10878 10976 11914 12432 12691 13524 13616 14504 15456 15778 16464 17871 18032 20424 21756 23667 23828 24864 25382 27048 27232 29008 31556 32928 35742 36064 38073 40848 41699 43512 47334 47656 50764 54096 58016 63112 71484 76146 81696 83398 87024 94668 95312 101528 108192 125097 126224 142968 152292 166796 174048 189336 190624 203056 250194 252448 285936 291893 304584 333592 378672 406112 500388 571872 583786 609168 667184 757344 875679 1000776 1167572 1218336 1334368 1751358 2001552 2335144 3502716 4003104 4670288 7005432 9340576 14010864 28021728
- Sum of all divisors σ(n): 91929600
- Sum of proper divisors (its aliquot sum) s(n): 63907872
- 28021728 is an abundant number, because the sum of its proper divisors (63907872) is greater than itself. Its abundance is 35886144
Bases of 28021728
- Binary: 11010101110010011111000002
- Hexadecimal: 0x1AB93E0
- Base-36: GOLPC
Squares and roots of 28021728
- 28021728 squared (280217282) is 785217240105984
- 28021728 cubed (280217283) is 22003143923160574820352
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The
square root of 28021728 is 5293.5553269991 -
The
cube root of 28021728 is 303.7374233137
Scales and comparisons
How big is 28021728?- 28,021,728 seconds is equal to 46 weeks, 2 days, 7 hours, 48 minutes, 48 seconds.
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To count from 1 to 28,021,728 would take you about seventeen 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 28021728 cubic inches would be around 25.3 feet tall.
Recreational maths with 28021728
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The information we have on file for 28021728 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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