20749540
20,749,540 is an even composite number composed of five prime numbers multiplied together.
20749540 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 20749540:
22 × 5 × 72 × 31 × 683
(2 × 2 × 5 × 7 × 7 × 31 × 683)See below for interesting mathematical facts about the number 20749540 from the Numbermatics database.
Names of 20749540
- Cardinal: 20749540 can be written as Twenty million, seven hundred forty-nine thousand, five hundred forty.
Scientific notation
- Scientific notation: 2.074954 × 107
Factors of 20749540
Divisors of 20749540
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 4 5 7 10 14 20 28 31 35 49 62 70 98 124 140 155 196 217 245 310 434 490 620 683 868 980 1085 1366 1519 2170 2732 3038 3415 4340 4781 6076 6830 7595 9562 13660 15190 19124 21173 23905 30380 33467 42346 47810 66934 84692 95620 105865 133868 148211 167335 211730 296422 334670 423460 592844 669340 741055 1037477 1482110 2074954 2964220 4149908 5187385 10374770 20749540
- Sum of all divisors σ(n): 52399872
- Sum of proper divisors (its aliquot sum) s(n): 31650332
- 20749540 is an abundant number, because the sum of its proper divisors (31650332) is greater than itself. Its abundance is 10900792
Bases of 20749540
- Binary: 10011110010011100111001002
- Hexadecimal: 0x13C9CE4
- Base-36: CCQG4
Squares and roots of 20749540
- 20749540 squared (207495402) is 430543410211600
- 20749540 cubed (207495403) is 8933577711922002664000
-
The
square root of 20749540 is 4555.1662977327 -
The
cube root of 20749540 is 274.7912023891
Scales and comparisons
How big is 20749540?- 20,749,540 seconds is equal to 34 weeks, 2 days, 3 hours, 45 minutes, 40 seconds.
-
To count from 1 to 20,749,540 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 20749540 cubic inches would be around 22.9 feet tall.
Recreational maths with 20749540
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The information we have on file for 20749540 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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