28217728
28,217,728 is an even composite number composed of four prime numbers multiplied together.
28217728 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 28217728:
27 × 72 × 11 × 409
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 7 × 7 × 11 × 409)See below for interesting mathematical facts about the number 28217728 from the Numbermatics database.
Names of 28217728
- Cardinal: 28217728 can be written as Twenty-eight million, two hundred seventeen thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 2.8217728 × 107
Factors of 28217728
Divisors of 28217728
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 4 7 8 11 14 16 22 28 32 44 49 56 64 77 88 98 112 128 154 176 196 224 308 352 392 409 448 539 616 704 784 818 896 1078 1232 1408 1568 1636 2156 2464 2863 3136 3272 4312 4499 4928 5726 6272 6544 8624 8998 9856 11452 13088 17248 17996 20041 22904 26176 31493 34496 35992 40082 45808 52352 62986 68992 71984 80164 91616 125972 143968 160328 183232 220451 251944 287936 320656 366464 440902 503888 575872 641312 881804 1007776 1282624 1763608 2015552 2565248 3527216 4031104 7054432 14108864 28217728
- Sum of all divisors σ(n): 71512200
- Sum of proper divisors (its aliquot sum) s(n): 43294472
- 28217728 is an abundant number, because the sum of its proper divisors (43294472) is greater than itself. Its abundance is 15076744
Bases of 28217728
- Binary: 11010111010010001100000002
- Hexadecimal: 0x1AE9180
- Base-36: GSSXS
Squares and roots of 28217728
- 28217728 squared (282177282) is 796240173481984
- 28217728 cubed (282177283) is 22468088637987437412352
-
The
square root of 28217728 is 5312.0361444553 -
The
cube root of 28217728 is 304.4439496957
Scales and comparisons
How big is 28217728?- 28,217,728 seconds is equal to 46 weeks, 4 days, 14 hours, 15 minutes, 28 seconds.
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To count from 1 to 28,217,728 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 28217728 cubic inches would be around 25.4 feet tall.
Recreational maths with 28217728
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The information we have on file for 28217728 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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