21431904
21,431,904 is an even composite number composed of four prime numbers multiplied together.
21431904 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 21431904:
25 × 3 × 132 × 1321
(2 × 2 × 2 × 2 × 2 × 3 × 13 × 13 × 1321)See below for interesting mathematical facts about the number 21431904 from the Numbermatics database.
Names of 21431904
- Cardinal: 21431904 can be written as Twenty-one million, four hundred thirty-one thousand, nine hundred four.
Scientific notation
- Scientific notation: 2.1431904 × 107
Factors of 21431904
Divisors of 21431904
- Number of divisors d(n): 72
-
Complete list of divisors:
1 2 3 4 6 8 12 13 16 24 26 32 39 48 52 78 96 104 156 169 208 312 338 416 507 624 676 1014 1248 1321 1352 2028 2642 2704 3963 4056 5284 5408 7926 8112 10568 15852 16224 17173 21136 31704 34346 42272 51519 63408 68692 103038 126816 137384 206076 223249 274768 412152 446498 549536 669747 824304 892996 1339494 1648608 1785992 2678988 3571984 5357976 7143968 10715952 21431904
- Sum of all divisors σ(n): 60965352
- Sum of proper divisors (its aliquot sum) s(n): 39533448
- 21431904 is an abundant number, because the sum of its proper divisors (39533448) is greater than itself. Its abundance is 18101544
Bases of 21431904
- Binary: 10100011100000110011000002
- Hexadecimal: 0x1470660
- Base-36: CRCYO
Squares and roots of 21431904
- 21431904 squared (214319042) is 459326509065216
- 21431904 cubed (214319043) is 9844241646940839051264
-
The
square root of 21431904 is 4629.4604437233 -
The
cube root of 21431904 is 277.7710103003
Scales and comparisons
How big is 21431904?- 21,431,904 seconds is equal to 35 weeks, 3 days, 1 hour, 18 minutes, 24 seconds.
-
To count from 1 to 21,431,904 would take you about fifty-seven 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 21431904 cubic inches would be around 23.1 feet tall.
Recreational maths with 21431904
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The information we have on file for 21431904 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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