Base | Representation |
---|---|
bin | 10111001000001… |
… | …010111110111011 |
3 | 1000001010100210000 |
4 | 113020022332323 |
5 | 1243313034412 |
6 | 102300324043 |
7 | 12421046061 |
oct | 2710127673 |
9 | 1001110700 |
10 | 388018107 |
11 | 18a031824 |
12 | a9b43623 |
13 | 62507919 |
14 | 39766031 |
15 | 240e84dc |
hex | 1720afbb |
388018107 has 20 divisors (see below), whose sum is σ = 580282120. Its totient is φ = 258388704.
The previous prime is 388018097. The next prime is 388018109. The reversal of 388018107 is 701810883.
It is not a de Polignac number, because 388018107 - 216 = 387952571 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (388018109) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 89328 + ... + 93570.
It is an arithmetic number, because the mean of its divisors is an integer number (29014106).
Almost surely, 2388018107 is an apocalyptic number.
388018107 is a deficient number, since it is larger than the sum of its proper divisors (192264013).
388018107 is a wasteful number, since it uses less digits than its factorization.
388018107 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5384 (or 5375 counting only the distinct ones).
The product of its (nonzero) digits is 10752, while the sum is 36.
The square root of 388018107 is about 19698.1752200553. The cubic root of 388018107 is about 729.3746486606.
The spelling of 388018107 in words is "three hundred eighty-eight million, eighteen thousand, one hundred seven".
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