20729142
20,729,142 is an even composite number composed of six prime numbers multiplied together.
20729142 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 20729142:
2 × 33 × 7 × 29 × 31 × 61
(2 × 3 × 3 × 3 × 7 × 29 × 31 × 61)See below for interesting mathematical facts about the number 20729142 from the Numbermatics database.
Names of 20729142
- Cardinal: 20729142 can be written as Twenty million, seven hundred twenty-nine thousand, one hundred forty-two.
Scientific notation
- Scientific notation: 2.0729142 × 107
Factors of 20729142
Divisors of 20729142
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 6 7 9 14 18 21 27 29 31 42 54 58 61 62 63 87 93 122 126 174 183 186 189 203 217 261 279 366 378 406 427 434 522 549 558 609 651 783 837 854 899 1098 1218 1281 1302 1566 1647 1674 1769 1798 1827 1891 1953 2562 2697 3294 3538 3654 3782 3843 3906 5307 5394 5481 5673 5859 6293 7686 8091 10614 10962 11346 11529 11718 12383 12586 13237 15921 16182 17019 18879 23058 24273 24766 26474 31842 34038 37149 37758 39711 47763 48546 51057 54839 56637 74298 79422 95526 102114 109678 111447 113274 119133 164517 169911 222894 238266 329034 334341 339822 357399 383873 493551 668682 714798 767746 987102 1151619 1480653 2303238 2961306 3454857 6909714 10364571 20729142
- Sum of all divisors σ(n): 57139200
- Sum of proper divisors (its aliquot sum) s(n): 36410058
- 20729142 is an abundant number, because the sum of its proper divisors (36410058) is greater than itself. Its abundance is 15680916
Bases of 20729142
- Binary: 10011110001001101001101102
- Hexadecimal: 0x13C4D36
- Base-36: CCAPI
Squares and roots of 20729142
- 20729142 squared (207291422) is 429697328056164
- 20729142 cubed (207291423) is 8907256930296807531288
-
The
square root of 20729142 is 4552.9267510031 -
The
cube root of 20729142 is 274.7011276423
Scales and comparisons
How big is 20729142?- 20,729,142 seconds is equal to 34 weeks, 1 day, 22 hours, 5 minutes, 42 seconds.
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To count from 1 to 20,729,142 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 20729142 cubic inches would be around 22.9 feet tall.
Recreational maths with 20729142
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The information we have on file for 20729142 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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