20921824
20,921,824 is an even composite number composed of four prime numbers multiplied together.
20921824 is an even composite number. It is composed of four distinct prime numbers multiplied together. It has a total of seventy-two divisors.
Prime factorization of 20921824:
25 × 72 × 11 × 1213
(2 × 2 × 2 × 2 × 2 × 7 × 7 × 11 × 1213)See below for interesting mathematical facts about the number 20921824 from the Numbermatics database.
Names of 20921824
- Cardinal: 20921824 can be written as Twenty million, nine hundred twenty-one thousand, eight hundred twenty-four.
Scientific notation
- Scientific notation: 2.0921824 × 107
Factors of 20921824
Divisors of 20921824
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 4 7 8 11 14 16 22 28 32 44 49 56 77 88 98 112 154 176 196 224 308 352 392 539 616 784 1078 1213 1232 1568 2156 2426 2464 4312 4852 8491 8624 9704 13343 16982 17248 19408 26686 33964 38816 53372 59437 67928 93401 106744 118874 135856 186802 213488 237748 271712 373604 426976 475496 653807 747208 950992 1307614 1494416 1901984 2615228 2988832 5230456 10460912 20921824
- Sum of all divisors σ(n): 52313688
- Sum of proper divisors (its aliquot sum) s(n): 31391864
- 20921824 is an abundant number, because the sum of its proper divisors (31391864) is greater than itself. Its abundance is 10470040
Bases of 20921824
- Binary: 10011111100111101111000002
- Hexadecimal: 0x13F3DE0
- Base-36: CGFDS
Squares and roots of 20921824
- 20921824 squared (209218242) is 437722719486976
- 20921824 cubed (209218243) is 9157957697907882164224
-
The
square root of 20921824 is 4574.0380409439 -
The
cube root of 20921824 is 275.5496401011
Scales and comparisons
How big is 20921824?- 20,921,824 seconds is equal to 34 weeks, 4 days, 3 hours, 37 minutes, 4 seconds.
-
To count from 1 to 20,921,824 would take you about fifty-one weeks!
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 20921824 cubic inches would be around 23 feet tall.
Recreational maths with 20921824
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The information we have on file for 20921824 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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