21381444
21,381,444 is an even composite number composed of six prime numbers multiplied together.
21381444 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of two hundred sixteen divisors.
Prime factorization of 21381444:
22 × 32 × 72 × 17 × 23 × 31
(2 × 2 × 3 × 3 × 7 × 7 × 17 × 23 × 31)See below for interesting mathematical facts about the number 21381444 from the Numbermatics database.
Names of 21381444
- Cardinal: 21381444 can be written as Twenty-one million, three hundred eighty-one thousand, four hundred forty-four.
Scientific notation
- Scientific notation: 2.1381444 × 107
Factors of 21381444
Divisors of 21381444
- Number of divisors d(n): 216
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Complete list of divisors:
1 2 3 4 6 7 9 12 14 17 18 21 23 28 31 34 36 42 46 49 51 62 63 68 69 84 92 93 98 102 119 124 126 138 147 153 161 186 196 204 207 217 238 252 276 279 294 306 322 357 372 391 414 434 441 476 483 527 558 588 612 644 651 713 714 782 828 833 868 882 966 1054 1071 1116 1127 1173 1302 1426 1428 1449 1519 1564 1581 1666 1764 1932 1953 2108 2139 2142 2254 2346 2499 2604 2737 2852 2898 3038 3162 3332 3381 3519 3689 3906 4278 4284 4508 4557 4692 4743 4991 4998 5474 5796 6076 6324 6417 6762 7038 7378 7497 7812 8211 8556 9114 9486 9982 9996 10143 10948 11067 12121 12834 13524 13671 14076 14756 14973 14994 16422 18228 18972 19159 19964 20286 22134 24242 24633 25668 25823 27342 29946 29988 32844 33201 34937 36363 38318 40572 44268 44919 48484 49266 51646 54684 57477 59892 66402 69874 72726 76636 77469 84847 89838 98532 103292 104811 109089 114954 132804 139748 145452 154938 169694 172431 179676 209622 218178 229908 232407 254541 309876 314433 339388 344862 419244 436356 464814 509082 593929 628866 689724 763623 929628 1018164 1187858 1257732 1527246 1781787 2375716 3054492 3563574 5345361 7127148 10690722 21381444
- Sum of all divisors σ(n): 71705088
- Sum of proper divisors (its aliquot sum) s(n): 50323644
- 21381444 is an abundant number, because the sum of its proper divisors (50323644) is greater than itself. Its abundance is 28942200
Bases of 21381444
- Binary: 10100011001000001010001002
- Hexadecimal: 0x1464144
- Base-36: CQA10
Squares and roots of 21381444
- 21381444 squared (213814442) is 457166147525136
- 21381444 cubed (213814443) is 9774872382004433976384
-
The
square root of 21381444 is 4624.0073529353 -
The
cube root of 21381444 is 277.5528411671
Scales and comparisons
How big is 21381444?- 21,381,444 seconds is equal to 35 weeks, 2 days, 11 hours, 17 minutes, 24 seconds.
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To count from 1 to 21,381,444 would take you about four hours!
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 21381444 cubic inches would be around 23.1 feet tall.
Recreational maths with 21381444
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The information we have on file for 21381444 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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