28123290
28,123,290 is an even composite number composed of five prime numbers multiplied together.
28123290 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred eight divisors.
Prime factorization of 28123290:
2 × 32 × 5 × 132 × 432
(2 × 3 × 3 × 5 × 13 × 13 × 43 × 43)See below for interesting mathematical facts about the number 28123290 from the Numbermatics database.
Names of 28123290
- Cardinal: 28123290 can be written as Twenty-eight million, one hundred twenty-three thousand, two hundred ninety.
Scientific notation
- Scientific notation: 2.812329 × 107
Factors of 28123290
Divisors of 28123290
- Number of divisors d(n): 108
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Complete list of divisors:
1 2 3 5 6 9 10 13 15 18 26 30 39 43 45 65 78 86 90 117 129 130 169 195 215 234 258 338 387 390 430 507 559 585 645 774 845 1014 1118 1170 1290 1521 1677 1690 1849 1935 2535 2795 3042 3354 3698 3870 5031 5070 5547 5590 7267 7605 8385 9245 10062 11094 14534 15210 16641 16770 18490 21801 24037 25155 27735 33282 36335 43602 48074 50310 55470 65403 72111 72670 83205 109005 120185 130806 144222 166410 216333 218010 240370 312481 327015 360555 432666 624962 654030 721110 937443 1081665 1562405 1874886 2163330 2812329 3124810 4687215 5624658 9374430 14061645 28123290
- Sum of all divisors σ(n): 81062046
- Sum of proper divisors (its aliquot sum) s(n): 52938756
- 28123290 is an abundant number, because the sum of its proper divisors (52938756) is greater than itself. Its abundance is 24815466
Bases of 28123290
- Binary: 11010110100100000100110102
- Hexadecimal: 0x1AD209A
- Base-36: GQS2I
Squares and roots of 28123290
- 28123290 squared (281232902) is 790919440424100
- 28123290 cubed (281232903) is 22243256789684687289000
-
The
square root of 28123290 is 5303.1396361023 -
The
cube root of 28123290 is 304.1039363557
Scales and comparisons
How big is 28123290?- 28,123,290 seconds is equal to 46 weeks, 3 days, 12 hours, 1 minute, 30 seconds.
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To count from 1 to 28,123,290 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 28123290 cubic inches would be around 25.3 feet tall.
Recreational maths with 28123290
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The information we have on file for 28123290 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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