81289000
81,289,000 is an even composite number composed of four prime numbers multiplied together.
81289000 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 81289000:
23 × 53 × 133 × 37
(2 × 2 × 2 × 5 × 5 × 5 × 13 × 13 × 13 × 37)See below for interesting mathematical facts about the number 81289000 from the Numbermatics database.
Names of 81289000
- Cardinal: 81289000 can be written as Eighty-one million, two hundred eighty-nine thousand.
Scientific notation
- Scientific notation: 8.1289 × 107
Factors of 81289000
Divisors of 81289000
- Number of divisors d(n): 128
-
Complete list of divisors:
1 2 4 5 8 10 13 20 25 26 37 40 50 52 65 74 100 104 125 130 148 169 185 200 250 260 296 325 338 370 481 500 520 650 676 740 845 925 962 1000 1300 1352 1480 1625 1690 1850 1924 2197 2405 2600 3250 3380 3700 3848 4225 4394 4625 4810 6253 6500 6760 7400 8450 8788 9250 9620 10985 12025 12506 13000 16900 17576 18500 19240 21125 21970 24050 25012 31265 33800 37000 42250 43940 48100 50024 54925 60125 62530 81289 84500 87880 96200 109850 120250 125060 156325 162578 169000 219700 240500 250120 274625 312650 325156 406445 439400 481000 549250 625300 650312 781625 812890 1098500 1250600 1563250 1625780 2032225 2197000 3126500 3251560 4064450 6253000 8128900 10161125 16257800 20322250 40644500 81289000
- Sum of all divisors σ(n): 211629600
- Sum of proper divisors (its aliquot sum) s(n): 130340600
- 81289000 is an abundant number, because the sum of its proper divisors (130340600) is greater than itself. Its abundance is 49051600
Bases of 81289000
- Binary: 1001101100001011111001010002
- Hexadecimal: 0x4D85F28
- Base-36: 1CEAZS
Squares and roots of 81289000
- 81289000 squared (812890002) is 6607901521000000
- 81289000 cubed (812890003) is 537149706740569000000000
-
The
square root of 81289000 is 9016.0412598879 -
The
cube root of 81289000 is 433.1888407139
Scales and comparisons
How big is 81289000?- 81,289,000 seconds is equal to 2 years, 30 weeks, 2 days, 20 hours, 16 minutes, 40 seconds.
-
To count from 1 to 81,289,000 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 81289000 cubic inches would be around 36.1 feet tall.
Recreational maths with 81289000
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The information we have on file for 81289000 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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