21420828
21,420,828 is an even composite number composed of six prime numbers multiplied together.
21420828 is an even composite number. It is composed of six distinct prime numbers multiplied together. It has a total of one hundred ninety-two divisors.
Prime factorization of 21420828:
22 × 33 × 11 × 13 × 19 × 73
(2 × 2 × 3 × 3 × 3 × 11 × 13 × 19 × 73)See below for interesting mathematical facts about the number 21420828 from the Numbermatics database.
Names of 21420828
- Cardinal: 21420828 can be written as Twenty-one million, four hundred twenty thousand, eight hundred twenty-eight.
Scientific notation
- Scientific notation: 2.1420828 × 107
Factors of 21420828
Divisors of 21420828
- Number of divisors d(n): 192
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Complete list of divisors:
1 2 3 4 6 9 11 12 13 18 19 22 26 27 33 36 38 39 44 52 54 57 66 73 76 78 99 108 114 117 132 143 146 156 171 198 209 219 228 234 247 286 292 297 342 351 396 418 429 438 468 494 513 572 594 627 657 684 702 741 803 836 858 876 949 988 1026 1188 1254 1287 1314 1387 1404 1482 1606 1716 1881 1898 1971 2052 2223 2409 2508 2574 2628 2717 2774 2847 2964 3212 3762 3796 3861 3942 4161 4446 4818 5148 5434 5548 5643 5694 6669 7227 7524 7722 7884 8151 8322 8541 8892 9636 10439 10868 11286 11388 12483 13338 14454 15257 15444 16302 16644 17082 18031 20878 21681 22572 24453 24966 25623 26676 28908 30514 31317 32604 34164 36062 37449 41756 43362 45771 48906 49932 51246 54093 61028 62634 72124 73359 74898 86724 91542 93951 97812 102492 108186 125268 137313 146718 149796 162279 183084 187902 198341 216372 274626 281853 293436 324558 375804 396682 411939 486837 549252 563706 595023 649116 793364 823878 973674 1127412 1190046 1647756 1785069 1947348 2380092 3570138 5355207 7140276 10710414 21420828
- Sum of all divisors σ(n): 69619200
- Sum of proper divisors (its aliquot sum) s(n): 48198372
- 21420828 is an abundant number, because the sum of its proper divisors (48198372) is greater than itself. Its abundance is 26777544
Bases of 21420828
- Binary: 10100011011011011000111002
- Hexadecimal: 0x146DB1C
- Base-36: CR4F0
Squares and roots of 21420828
- 21420828 squared (214208282) is 458851872205584
- 21420828 cubed (214208283) is 9828987031993795503552
-
The
square root of 21420828 is 4628.2640374119 -
The
cube root of 21420828 is 277.7231514033
Scales and comparisons
How big is 21420828?- 21,420,828 seconds is equal to 35 weeks, 2 days, 22 hours, 13 minutes, 48 seconds.
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To count from 1 to 21,420,828 would take you about twenty-one 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 21420828 cubic inches would be around 23.1 feet tall.
Recreational maths with 21420828
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The information we have on file for 21420828 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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