21041664
21,041,664 is an even composite number composed of five prime numbers multiplied together.
21041664 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred sixty divisors.
Prime factorization of 21041664:
29 × 3 × 7 × 19 × 103
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 7 × 19 × 103)See below for interesting mathematical facts about the number 21041664 from the Numbermatics database.
Names of 21041664
- Cardinal: 21041664 can be written as Twenty-one million, forty-one thousand, six hundred sixty-four.
Scientific notation
- Scientific notation: 2.1041664 × 107
Factors of 21041664
Divisors of 21041664
- Number of divisors d(n): 160
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Complete list of divisors:
1 2 3 4 6 7 8 12 14 16 19 21 24 28 32 38 42 48 56 57 64 76 84 96 103 112 114 128 133 152 168 192 206 224 228 256 266 304 309 336 384 399 412 448 456 512 532 608 618 672 721 768 798 824 896 912 1064 1216 1236 1344 1442 1536 1596 1648 1792 1824 1957 2128 2163 2432 2472 2688 2884 3192 3296 3584 3648 3914 4256 4326 4864 4944 5376 5768 5871 6384 6592 7296 7828 8512 8652 9728 9888 10752 11536 11742 12768 13184 13699 14592 15656 17024 17304 19776 23072 23484 25536 26368 27398 29184 31312 34048 34608 39552 41097 46144 46968 51072 52736 54796 62624 68096 69216 79104 82194 92288 93936 102144 109592 125248 138432 158208 164388 184576 187872 204288 219184 250496 276864 328776 369152 375744 438368 500992 553728 657552 751488 876736 1001984 1107456 1315104 1502976 1753472 2630208 3005952 3506944 5260416 7013888 10520832 21041664
- Sum of all divisors σ(n): 68090880
- Sum of proper divisors (its aliquot sum) s(n): 47049216
- 21041664 is an abundant number, because the sum of its proper divisors (47049216) is greater than itself. Its abundance is 26007552
Bases of 21041664
- Binary: 10100000100010010000000002
- Hexadecimal: 0x1411200
- Base-36: CIZUO
Squares and roots of 21041664
- 21041664 squared (210416642) is 442751623888896
- 21041664 cubed (210416643) is 9316230905324522962944
-
The
square root of 21041664 is 4587.1193575053 -
The
cube root of 21041664 is 276.0747539583
Scales and comparisons
How big is 21041664?- 21,041,664 seconds is equal to 34 weeks, 5 days, 12 hours, 54 minutes, 24 seconds.
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To count from 1 to 21,041,664 would take you about seven 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 21041664 cubic inches would be around 23 feet tall.
Recreational maths with 21041664
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