81448740
81,448,740 is an even composite number composed of four prime numbers multiplied together.
81448740 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 81448740:
22 × 35 × 5 × 16759
(2 × 2 × 3 × 3 × 3 × 3 × 3 × 5 × 16759)See below for interesting mathematical facts about the number 81448740 from the Numbermatics database.
Names of 81448740
- Cardinal: 81448740 can be written as Eighty-one million, four hundred forty-eight thousand, seven hundred forty.
Scientific notation
- Scientific notation: 8.144874 × 107
Factors of 81448740
Divisors of 81448740
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 81 90 108 135 162 180 243 270 324 405 486 540 810 972 1215 1620 2430 4860 16759 33518 50277 67036 83795 100554 150831 167590 201108 251385 301662 335180 452493 502770 603324 754155 904986 1005540 1357479 1508310 1809972 2262465 2714958 3016620 4072437 4524930 5429916 6787395 8144874 9049860 13574790 16289748 20362185 27149580 40724370 81448740
- Sum of all divisors σ(n): 256226880
- Sum of proper divisors (its aliquot sum) s(n): 174778140
- 81448740 is an abundant number, because the sum of its proper divisors (174778140) is greater than itself. Its abundance is 93329400
Bases of 81448740
- Binary: 1001101101011001111001001002
- Hexadecimal: 0x4DACF24
- Base-36: 1CHQ90
Squares and roots of 81448740
- 81448740 squared (814487402) is 6633897247587600
- 81448740 cubed (814487403) is 540322572105478059624000
-
The
square root of 81448740 is 9024.8955672629 -
The
cube root of 81448740 is 433.4724063805
Scales and comparisons
How big is 81448740?- 81,448,740 seconds is equal to 2 years, 30 weeks, 4 days, 16 hours, 39 minutes.
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To count from 1 to 81,448,740 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 81448740 cubic inches would be around 36.1 feet tall.
Recreational maths with 81448740
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The information we have on file for 81448740 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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