20728125
20,728,125 is an odd composite number composed of four prime numbers multiplied together.
20728125 is an odd composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 20728125:
32 × 55 × 11 × 67
(3 × 3 × 5 × 5 × 5 × 5 × 5 × 11 × 67)See below for interesting mathematical facts about the number 20728125 from the Numbermatics database.
Names of 20728125
- Cardinal: 20728125 can be written as Twenty million, seven hundred twenty-eight thousand, one hundred twenty-five.
Scientific notation
- Scientific notation: 2.0728125 × 107
Factors of 20728125
Divisors of 20728125
- Number of divisors d(n): 72
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Complete list of divisors:
1 3 5 9 11 15 25 33 45 55 67 75 99 125 165 201 225 275 335 375 495 603 625 737 825 1005 1125 1375 1675 1875 2211 2475 3015 3125 3685 4125 5025 5625 6633 6875 8375 9375 11055 12375 15075 18425 20625 25125 28125 33165 34375 41875 55275 61875 75375 92125 103125 125625 165825 209375 276375 309375 376875 460625 628125 829125 1381875 1884375 2303125 4145625 6909375 20728125
- Sum of all divisors σ(n): 41434848
- Sum of proper divisors (its aliquot sum) s(n): 20706723
- 20728125 is a deficient number, because the sum of its proper divisors (20706723) is less than itself. Its deficiency is 21402
Bases of 20728125
- Binary: 10011110001001001001111012
- Hexadecimal: 0x13C493D
- Base-36: CC9X9
Squares and roots of 20728125
- 20728125 squared (207281252) is 429655166015625
- 20728125 cubed (207281253) is 8905945988067626953125
-
The
square root of 20728125 is 4552.8150632329 -
The
cube root of 20728125 is 274.6966351647
Scales and comparisons
How big is 20728125?- 20,728,125 seconds is equal to 34 weeks, 1 day, 21 hours, 48 minutes, 45 seconds.
-
To count from 1 to 20,728,125 would take you about fifty-one 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 20728125 cubic inches would be around 22.9 feet tall.
Recreational maths with 20728125
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The information we have on file for 20728125 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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