21221440
21,221,440 is an even composite number composed of five prime numbers multiplied together.
21221440 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twelve divisors.
Prime factorization of 21221440:
26 × 5 × 17 × 47 × 83
(2 × 2 × 2 × 2 × 2 × 2 × 5 × 17 × 47 × 83)See below for interesting mathematical facts about the number 21221440 from the Numbermatics database.
Names of 21221440
- Cardinal: 21221440 can be written as Twenty-one million, two hundred twenty-one thousand, four hundred forty.
Scientific notation
- Scientific notation: 2.122144 × 107
Factors of 21221440
Divisors of 21221440
- Number of divisors d(n): 112
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Complete list of divisors:
1 2 4 5 8 10 16 17 20 32 34 40 47 64 68 80 83 85 94 136 160 166 170 188 235 272 320 332 340 376 415 470 544 664 680 752 799 830 940 1088 1328 1360 1411 1504 1598 1660 1880 2656 2720 2822 3008 3196 3320 3760 3901 3995 5312 5440 5644 6392 6640 7055 7520 7802 7990 11288 12784 13280 14110 15040 15604 15980 19505 22576 25568 26560 28220 31208 31960 39010 45152 51136 56440 62416 63920 66317 78020 90304 112880 124832 127840 132634 156040 225760 249664 255680 265268 312080 331585 451520 530536 624160 663170 1061072 1248320 1326340 2122144 2652680 4244288 5305360 10610720 21221440
- Sum of all divisors σ(n): 55302912
- Sum of proper divisors (its aliquot sum) s(n): 34081472
- 21221440 is an abundant number, because the sum of its proper divisors (34081472) is greater than itself. Its abundance is 12860032
Bases of 21221440
- Binary: 10100001111010000010000002
- Hexadecimal: 0x143D040
- Base-36: CMUKG
Squares and roots of 21221440
- 21221440 squared (212214402) is 450349515673600
- 21221440 cubed (212214403) is 9557065225896361984000
-
The
square root of 21221440 is 4606.6734201589 -
The
cube root of 21221440 is 276.8587688597
Scales and comparisons
How big is 21221440?- 21,221,440 seconds is equal to 35 weeks, 14 hours, 50 minutes, 40 seconds.
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To count from 1 to 21,221,440 would take you about four days!
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 21221440 cubic inches would be around 23.1 feet tall.
Recreational maths with 21221440
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The information we have on file for 21221440 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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