21028320
21,028,320 is an even composite number composed of five prime numbers multiplied together.
21028320 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred forty-four divisors.
Prime factorization of 21028320:
25 × 32 × 5 × 17 × 859
(2 × 2 × 2 × 2 × 2 × 3 × 3 × 5 × 17 × 859)See below for interesting mathematical facts about the number 21028320 from the Numbermatics database.
Names of 21028320
- Cardinal: 21028320 can be written as Twenty-one million, twenty-eight thousand, three hundred twenty.
Scientific notation
- Scientific notation: 2.102832 × 107
Factors of 21028320
Divisors of 21028320
- Number of divisors d(n): 144
-
Complete list of divisors:
1 2 3 4 5 6 8 9 10 12 15 16 17 18 20 24 30 32 34 36 40 45 48 51 60 68 72 80 85 90 96 102 120 136 144 153 160 170 180 204 240 255 272 288 306 340 360 408 480 510 544 612 680 720 765 816 859 1020 1224 1360 1440 1530 1632 1718 2040 2448 2577 2720 3060 3436 4080 4295 4896 5154 6120 6872 7731 8160 8590 10308 12240 12885 13744 14603 15462 17180 20616 24480 25770 27488 29206 30924 34360 38655 41232 43809 51540 58412 61848 68720 73015 77310 82464 87618 103080 116824 123696 131427 137440 146030 154620 175236 206160 219045 233648 247392 262854 292060 309240 350472 412320 438090 467296 525708 584120 618480 657135 700944 876180 1051416 1168240 1236960 1314270 1401888 1752360 2102832 2336480 2628540 3504720 4205664 5257080 7009440 10514160 21028320
- Sum of all divisors σ(n): 76068720
- Sum of proper divisors (its aliquot sum) s(n): 55040400
- 21028320 is an abundant number, because the sum of its proper divisors (55040400) is greater than itself. Its abundance is 34012080
Bases of 21028320
- Binary: 10100000011011101111000002
- Hexadecimal: 0x140DDE0
- Base-36: CIPK0
Squares and roots of 21028320
- 21028320 squared (210283202) is 442190242022400
- 21028320 cubed (210283203) is 9298517910124474368000
-
The
square root of 21028320 is 4585.6646192237 -
The
cube root of 21028320 is 276.0163821405
Scales and comparisons
How big is 21028320?- 21,028,320 seconds is equal to 34 weeks, 5 days, 9 hours, 12 minutes.
-
To count from 1 to 21,028,320 would take you about forty-eight minutes!
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 21028320 cubic inches would be around 23 feet tall.
Recreational maths with 21028320
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The information we have on file for 21028320 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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