20828745
20,828,745 is an odd composite number composed of five prime numbers multiplied together.
20828745 is an odd composite number. It is composed of five distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 20828745:
35 × 5 × 7 × 31 × 79
(3 × 3 × 3 × 3 × 3 × 5 × 7 × 31 × 79)See below for interesting mathematical facts about the number 20828745 from the Numbermatics database.
Names of 20828745
- Cardinal: 20828745 can be written as Twenty million, eight hundred twenty-eight thousand, seven hundred forty-five.
Scientific notation
- Scientific notation: 2.0828745 × 107
Factors of 20828745
Divisors of 20828745
- Number of divisors d(n): 96
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Complete list of divisors:
1 3 5 7 9 15 21 27 31 35 45 63 79 81 93 105 135 155 189 217 237 243 279 315 395 405 465 553 567 651 711 837 945 1085 1185 1215 1395 1659 1701 1953 2133 2449 2511 2765 2835 3255 3555 4185 4977 5859 6399 7347 7533 8295 8505 9765 10665 12245 12555 14931 17143 17577 19197 22041 24885 29295 31995 36735 37665 44793 51429 52731 66123 74655 85715 87885 95985 110205 134379 154287 198369 223965 257145 263655 330615 462861 595107 671895 771435 991845 1388583 2314305 2975535 4165749 6942915 20828745
- Sum of all divisors σ(n): 44728320
- Sum of proper divisors (its aliquot sum) s(n): 23899575
- 20828745 is an abundant number, because the sum of its proper divisors (23899575) is greater than itself. Its abundance is 3070830
Bases of 20828745
- Binary: 10011110111010010010010012
- Hexadecimal: 0x13DD249
- Base-36: CEFK9
Squares and roots of 20828745
- 20828745 squared (208287452) is 433836618275025
- 20828745 cubed (208287453) is 9036272293712835593625
-
The
square root of 20828745 is 4563.8519914651 -
The
cube root of 20828745 is 275.1404021343
Scales and comparisons
How big is 20828745?- 20,828,745 seconds is equal to 34 weeks, 3 days, 1 hour, 45 minutes, 45 seconds.
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To count from 1 to 20,828,745 would take you about fifty-one 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 20828745 cubic inches would be around 22.9 feet tall.
Recreational maths with 20828745
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The information we have on file for 20828745 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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