21379968
21,379,968 is an even composite number composed of four prime numbers multiplied together.
21379968 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of ninety-six divisors.
Prime factorization of 21379968:
27 × 32 × 67 × 277
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 3 × 67 × 277)See below for interesting mathematical facts about the number 21379968 from the Numbermatics database.
Names of 21379968
- Cardinal: 21379968 can be written as Twenty-one million, three hundred seventy-nine thousand, nine hundred sixty-eight.
Scientific notation
- Scientific notation: 2.1379968 × 107
Factors of 21379968
Divisors of 21379968
- Number of divisors d(n): 96
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Complete list of divisors:
1 2 3 4 6 8 9 12 16 18 24 32 36 48 64 67 72 96 128 134 144 192 201 268 277 288 384 402 536 554 576 603 804 831 1072 1108 1152 1206 1608 1662 2144 2216 2412 2493 3216 3324 4288 4432 4824 4986 6432 6648 8576 8864 9648 9972 12864 13296 17728 18559 19296 19944 25728 26592 35456 37118 38592 39888 53184 55677 74236 77184 79776 106368 111354 148472 159552 167031 222708 296944 319104 334062 445416 593888 668124 890832 1187776 1336248 1781664 2375552 2672496 3563328 5344992 7126656 10689984 21379968
- Sum of all divisors σ(n): 62666760
- Sum of proper divisors (its aliquot sum) s(n): 41286792
- 21379968 is an abundant number, because the sum of its proper divisors (41286792) is greater than itself. Its abundance is 19906824
Bases of 21379968
- Binary: 10100011000111011100000002
- Hexadecimal: 0x1463B80
- Base-36: CQ8W0
Squares and roots of 21379968
- 21379968 squared (213799682) is 457103031681024
- 21379968 cubed (213799683) is 9772848190043279327232
-
The
square root of 21379968 is 4623.8477483585 -
The
cube root of 21379968 is 277.5464543609
Scales and comparisons
How big is 21379968?- 21,379,968 seconds is equal to 35 weeks, 2 days, 10 hours, 52 minutes, 48 seconds.
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To count from 1 to 21,379,968 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 21379968 cubic inches would be around 23.1 feet tall.
Recreational maths with 21379968
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