12387538 has 8 divisors (see below), whose sum is σ = 19180800. Its totient is φ = 5993940.

The previous prime is 12387527. The next prime is 12387539. The reversal of 12387538 is 83578321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12387497 and 12387506.

It is not an unprimeable number, because it can be changed into a prime (12387539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99838 + ... + 99961.

It is an arithmetic number, because the mean of its divisors is an integer number (2397600).

Almost surely, 2^12387538 is an apocalyptic number.

12387538 is a deficient number, since it is larger than the sum of its proper divisors (6793262).

12387538 is a wasteful number, since it uses less digits than its factorization.

12387538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199832.

The product of its digits is 40320, while the sum is 37.

The square root of 12387538 is about 3519.5934424305. The cubic root of 12387538 is about 231.3813407293.

The spelling of 12387538 in words is "twelve million, three hundred eighty-seven thousand, five hundred thirty-eight".