20985216
20,985,216 is an even composite number composed of five prime numbers multiplied together.
20985216 is an even composite number. It is composed of five distinct prime numbers multiplied together. It has a total of one hundred twenty-eight divisors.
Prime factorization of 20985216:
27 × 3 × 7 × 37 × 211
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 7 × 37 × 211)See below for interesting mathematical facts about the number 20985216 from the Numbermatics database.
Names of 20985216
- Cardinal: 20985216 can be written as Twenty million, nine hundred eighty-five thousand, two hundred sixteen.
Scientific notation
- Scientific notation: 2.0985216 × 107
Factors of 20985216
Divisors of 20985216
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 6 7 8 12 14 16 21 24 28 32 37 42 48 56 64 74 84 96 111 112 128 148 168 192 211 222 224 259 296 336 384 422 444 448 518 592 633 672 777 844 888 896 1036 1184 1266 1344 1477 1554 1688 1776 2072 2368 2532 2688 2954 3108 3376 3552 4144 4431 4736 5064 5908 6216 6752 7104 7807 8288 8862 10128 11816 12432 13504 14208 15614 16576 17724 20256 23421 23632 24864 27008 31228 33152 35448 40512 46842 47264 49728 54649 62456 70896 81024 93684 94528 99456 109298 124912 141792 163947 187368 189056 218596 249824 283584 327894 374736 437192 499648 567168 655788 749472 874384 999296 1311576 1498944 1748768 2623152 2997888 3497536 5246304 6995072 10492608 20985216
- Sum of all divisors σ(n): 65736960
- Sum of proper divisors (its aliquot sum) s(n): 44751744
- 20985216 is an abundant number, because the sum of its proper divisors (44751744) is greater than itself. Its abundance is 23766528
Bases of 20985216
- Binary: 10100000000110101100000002
- Hexadecimal: 0x1403580
- Base-36: CHSAO
Squares and roots of 20985216
- 20985216 squared (209852162) is 440379290566656
- 20985216 cubed (209852163) is 9241454534468038557696
-
The
square root of 20985216 is 4580.9623443115 -
The
cube root of 20985216 is 275.8276596851
Scales and comparisons
How big is 20985216?- 20,985,216 seconds is equal to 34 weeks, 4 days, 21 hours, 13 minutes, 36 seconds.
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To count from 1 to 20,985,216 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 20985216 cubic inches would be around 23 feet tall.
Recreational maths with 20985216
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The information we have on file for 20985216 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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