21438291644
21,438,291,644 is an even composite number composed of six prime numbers multiplied together.
What does the number 21438291644 look like?
This visualization shows the relationship between its 6 prime factors (large circles) and 288 divisors.
21438291644 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred eighty-eight divisors.
Prime factorization of 21438291644:
22 × 73 × 112 × 29 × 61 × 73
(2 × 2 × 7 × 7 × 7 × 11 × 11 × 29 × 61 × 73)See below for interesting mathematical facts about the number 21438291644 from the Numbermatics database.
Names of 21438291644
- Cardinal: 21438291644 can be written as Twenty-one billion, four hundred thirty-eight million, two hundred ninety-one thousand, six hundred forty-four.
Scientific notation
- Scientific notation: 2.1438291644 × 1010
Factors of 21438291644
Divisors of 21438291644
- Number of divisors d(n): 288
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Complete list of divisors:
1 2 4 7 11 14 22 28 29 44 49 58 61 73 77 98 116 121 122 146 154 196 203 242 244 292 308 319 343 406 427 484 511 539 638 671 686 803 812 847 854 1022 1078 1276 1342 1372 1421 1606 1694 1708 1769 2044 2117 2156 2233 2684 2842 2989 3212 3388 3509 3538 3577 3773 4234 4453 4466 4697 5621 5684 5929 5978 7018 7076 7154 7381 7546 8468 8833 8906 8932 9394 9947 11242 11858 11956 12383 14036 14308 14762 14819 15092 15631 17666 17812 18788 19459 19894 20923 22484 23287 23716 24563 24766 25039 29524 29638 31171 31262 32879 35332 38918 39347 39788 41503 41846 46574 48983 49126 49532 50078 51667 59276 61831 62342 62524 65758 77836 78694 83006 83692 86681 93148 97966 98252 100156 103334 103733 109417 123662 124684 129137 131516 136213 157388 163009 166012 171941 173362 195932 206668 207466 214049 218197 218834 230153 247324 256157 258274 272426 275429 326018 342881 343882 346724 361669 414932 428098 432817 436394 437668 460306 512314 516548 538813 544852 550858 606767 652036 685762 687764 723338 726131 856196 865634 872788 903959 920612 953491 1024628 1077626 1101716 1141063 1203587 1213534 1371524 1420507 1446676 1452262 1498343 1527379 1731268 1793099 1807918 1906982 2155252 2282126 2400167 2407174 2427068 2531683 2841014 2904524 2996686 3029719 3054758 3586198 3615836 3771691 3813964 4564252 4800334 4814348 5063366 5682028 5993372 6059438 6109516 6327713 6674437 7172396 7543382 7987441 9600668 9943549 10126732 10488401 12118876 12551693 12655426 13348874 15086764 15625577 15974882 16801169 19887098 20976802 25103386 25310852 26401837 26697748 31251154 31949764 33602338 39774196 41953604 44293991 50206772 52803674 62502308 67204676 69604843 73418807 87861851 88587982 105607348 109379039 139209686 146837614 175723702 177175964 184812859 218758078 278419372 293675228 351447404 369625718 437516156 487233901 739251436 765653273 974467802 1531306546 1948935604 3062613092 5359572911 10719145822 21438291644
- Sum of all divisors σ(n): 51257136000
- Sum of proper divisors (its aliquot sum) s(n): 29818844356
- 21438291644 is an abundant number, because the sum of its proper divisors (29818844356) is greater than itself. Its abundance is 8380552712
Bases of 21438291644
- Binary: 100111111011101001001011110101111002
- Hexadecimal: 0x4FDD25EBC
- Base-36: 9UJSZP8
Squares and roots of 21438291644
- 21438291644 squared (214382916442) is 459600348613200222736
- 21438291644 cubed (214382916443) is 9853046313253857323180127617984
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The
square root of 21438291644 is 146418.2080343835 -
The
cube root of 21438291644 is 2777.9860352587
Scales and comparisons
How big is 21438291644?- 21,438,291,644 seconds is equal to 681 years, 34 weeks, 6 days, 9 hours, 44 seconds.
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To count from 1 to 21,438,291,644 would take you about one thousand, three hundred sixty-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 21438291644 cubic inches would be around 231.5 feet tall.
Recreational maths with 21438291644
- 21438291644 backwards is 44619283412
- 21438291644 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 21438291644's digits is 44
- More coming soon!
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The information we have on file for 21438291644 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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