1818138728
1,818,138,728 is an even composite number composed of five prime numbers multiplied together.
1818138728 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 1818138728:
23 × 73 × 19 × 43 × 811
(2 × 2 × 2 × 7 × 7 × 7 × 19 × 43 × 811)See below for interesting mathematical facts about the number 1818138728 from the Numbermatics database.
Names of 1818138728
- Cardinal: 1818138728 can be written as One billion, eight hundred eighteen million, one hundred thirty-eight thousand, seven hundred twenty-eight.
Scientific notation
- Scientific notation: 1.818138728 × 109
Factors of 1818138728
Divisors of 1818138728
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 4 7 8 14 19 28 38 43 49 56 76 86 98 133 152 172 196 266 301 343 344 392 532 602 686 811 817 931 1064 1204 1372 1622 1634 1862 2107 2408 2744 3244 3268 3724 4214 5677 5719 6488 6517 6536 7448 8428 11354 11438 13034 14749 15409 16856 22708 22876 26068 29498 30818 34873 39739 40033 45416 45752 52136 58996 61636 69746 79478 80066 107863 117992 123272 139492 158956 160132 215726 244111 278173 278984 280231 317912 320264 431452 488222 556346 560462 662587 755041 862904 976444 1112692 1120924 1325174 1510082 1708777 1952888 2225384 2241848 2650348 3020164 3417554 4638109 5285287 5300696 6040328 6835108 9276218 10570574 11961439 13670216 18552436 21141148 23922878 32466763 37104872 42282296 47845756 64933526 95691512 129867052 227267341 259734104 454534682 909069364 1818138728
- Sum of all divisors σ(n): 4287360000
- Sum of proper divisors (its aliquot sum) s(n): 2469221272
- 1818138728 is an abundant number, because the sum of its proper divisors (2469221272) is greater than itself. Its abundance is 651082544
Bases of 1818138728
- Binary: 11011000101111010011000011010002
- Hexadecimal: 0x6C5E9868
- Base-36: U2H0TK
Squares and roots of 1818138728
- 1818138728 squared (18181387282) is 3305628434253457984
- 1818138728 cubed (18181387283) is 6010091076694213728631204352
-
The
square root of 1818138728 is 42639.6379909587 -
The
cube root of 1818138728 is 1220.5128024293
Scales and comparisons
How big is 1818138728?- 1,818,138,728 seconds is equal to 57 years, 42 weeks, 1 day, 6 hours, 32 minutes, 8 seconds.
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To count from 1 to 1,818,138,728 would take you about one hundred fifteen years!
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 1818138728 cubic inches would be around 101.7 feet tall.
Recreational maths with 1818138728
- 1818138728 backwards is 8278318181
- The number of decimal digits it has is: 10
- The sum of 1818138728's digits is 47
- More coming soon!
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The information we have on file for 1818138728 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!
Keywords: Divisors of 1818138728, math, Factors of 1818138728, curriculum, school, college, exams, university, Prime factorization of 1818138728, STEM, science, technology, engineering, physics, economics, calculator, one billion, eight hundred eighteen million, one hundred thirty-eight thousand, seven hundred twenty-eight.