28720680
28,720,680 is an even composite number composed of five prime numbers multiplied together.
28720680 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of sixty-four divisors.
Prime factorization of 28720680:
23 × 3 × 5 × 137 × 1747
(2 × 2 × 2 × 3 × 5 × 137 × 1747)See below for interesting mathematical facts about the number 28720680 from the Numbermatics database.
Names of 28720680
- Cardinal: 28720680 can be written as Twenty-eight million, seven hundred twenty thousand, six hundred eighty.
Scientific notation
- Scientific notation: 2.872068 × 107
Factors of 28720680
Divisors of 28720680
- Number of divisors d(n): 64
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Complete list of divisors:
1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 137 274 411 548 685 822 1096 1370 1644 1747 2055 2740 3288 3494 4110 5241 5480 6988 8220 8735 10482 13976 16440 17470 20964 26205 34940 41928 52410 69880 104820 209640 239339 478678 718017 957356 1196695 1436034 1914712 2393390 2872068 3590085 4786780 5744136 7180170 9573560 14360340 28720680
- Sum of all divisors σ(n): 86840640
- Sum of proper divisors (its aliquot sum) s(n): 58119960
- 28720680 is an abundant number, because the sum of its proper divisors (58119960) is greater than itself. Its abundance is 29399280
Bases of 28720680
- Binary: 11011011000111110001010002
- Hexadecimal: 0x1B63E28
- Base-36: H3L0O
Squares and roots of 28720680
- 28720680 squared (287206802) is 824877459662400
- 28720680 cubed (287206803) is 23691041558176698432000
-
The
square root of 28720680 is 5359.1678458507 -
The
cube root of 28720680 is 306.2421083625
Scales and comparisons
How big is 28720680?- 28,720,680 seconds is equal to 47 weeks, 3 days, 9 hours, 58 minutes.
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To count from 1 to 28,720,680 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 28720680 cubic inches would be around 25.5 feet tall.
Recreational maths with 28720680
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The information we have on file for 28720680 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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