81477942
81,477,942 is an even composite number composed of five prime numbers multiplied together.
81477942 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 81477942:
2 × 3 × 7 × 133 × 883
(2 × 3 × 7 × 13 × 13 × 13 × 883)See below for interesting mathematical facts about the number 81477942 from the Numbermatics database.
Names of 81477942
- Cardinal: 81477942 can be written as Eighty-one million, four hundred seventy-seven thousand, nine hundred forty-two.
Scientific notation
- Scientific notation: 8.1477942 × 107
Factors of 81477942
Divisors of 81477942
- Number of divisors d(n): 64
-
Complete list of divisors:
1 2 3 6 7 13 14 21 26 39 42 78 91 169 182 273 338 507 546 883 1014 1183 1766 2197 2366 2649 3549 4394 5298 6181 6591 7098 11479 12362 13182 15379 18543 22958 30758 34437 37086 46137 68874 80353 92274 149227 160706 241059 298454 447681 482118 895362 1044589 1939951 2089178 3133767 3879902 5819853 6267534 11639706 13579657 27159314 40738971 81477942
- Sum of all divisors σ(n): 201976320
- Sum of proper divisors (its aliquot sum) s(n): 120498378
- 81477942 is an abundant number, because the sum of its proper divisors (120498378) is greater than itself. Its abundance is 39020436
Bases of 81477942
- Binary: 1001101101101000001001101102
- Hexadecimal: 0x4DB4136
- Base-36: 1CICS6
Squares and roots of 81477942
- 81477942 squared (814779422) is 6638655032555364
- 81477942 cubed (814779423) is 540903949700554059780888
-
The
square root of 81477942 is 9026.5132803315 -
The
cube root of 81477942 is 433.5242048029
Scales and comparisons
How big is 81477942?- 81,477,942 seconds is equal to 2 years, 30 weeks, 5 days, 45 minutes, 42 seconds.
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To count from 1 to 81,477,942 would take you about three 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 81477942 cubic inches would be around 36.1 feet tall.
Recreational maths with 81477942
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The information we have on file for 81477942 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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