21399168
21,399,168 is an even composite number composed of five prime numbers multiplied together.
21399168 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 21399168:
27 × 3 × 7 × 19 × 419
(2 × 2 × 2 × 2 × 2 × 2 × 2 × 3 × 7 × 19 × 419)See below for interesting mathematical facts about the number 21399168 from the Numbermatics database.
Names of 21399168
- Cardinal: 21399168 can be written as Twenty-one million, three hundred ninety-nine thousand, one hundred sixty-eight.
Scientific notation
- Scientific notation: 2.1399168 × 107
Factors of 21399168
Divisors of 21399168
- Number of divisors d(n): 128
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Complete list of divisors:
1 2 3 4 6 7 8 12 14 16 19 21 24 28 32 38 42 48 56 57 64 76 84 96 112 114 128 133 152 168 192 224 228 266 304 336 384 399 419 448 456 532 608 672 798 838 896 912 1064 1216 1257 1344 1596 1676 1824 2128 2432 2514 2688 2933 3192 3352 3648 4256 5028 5866 6384 6704 7296 7961 8512 8799 10056 11732 12768 13408 15922 17024 17598 20112 23464 23883 25536 26816 31844 35196 40224 46928 47766 51072 53632 55727 63688 70392 80448 93856 95532 111454 127376 140784 160896 167181 187712 191064 222908 254752 281568 334362 375424 382128 445816 509504 563136 668724 764256 891632 1019008 1126272 1337448 1528512 1783264 2674896 3057024 3566528 5349792 7133056 10699584 21399168
- Sum of all divisors σ(n): 68544000
- Sum of proper divisors (its aliquot sum) s(n): 47144832
- 21399168 is an abundant number, because the sum of its proper divisors (47144832) is greater than itself. Its abundance is 25745664
Bases of 21399168
- Binary: 10100011010000110100000002
- Hexadecimal: 0x1468680
- Base-36: CQNPC
Squares and roots of 21399168
- 21399168 squared (213991682) is 457924391092224
- 21399168 cubed (213991683) is 9799200976280204869632
-
The
square root of 21399168 is 4625.9234753723 -
The
cube root of 21399168 is 277.6295118213
Scales and comparisons
How big is 21399168?- 21,399,168 seconds is equal to 35 weeks, 2 days, 16 hours, 12 minutes, 48 seconds.
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To count from 1 to 21,399,168 would take you about twelve 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 21399168 cubic inches would be around 23.1 feet tall.
Recreational maths with 21399168
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The information we have on file for 21399168 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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