12538387 has 4 divisors (see below), whose sum is σ = 12715056. Its totient is φ = 12361720.

The previous prime is 12538363. The next prime is 12538391. The reversal of 12538387 is 78383521.

12538387 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78383521 = 277 ⋅282973.

It is a cyclic number.

It is not a de Polignac number, because 12538387 - 2¹¹ = 12536339 is a prime.

It is a super-2 number, since 2×12538387² = 314422297123538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12538307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88228 + ... + 88369.

It is an arithmetic number, because the mean of its divisors is an integer number (3178764).

Almost surely, 2^12538387 is an apocalyptic number.

12538387 is a deficient number, since it is larger than the sum of its proper divisors (176669).

12538387 is an equidigital number, since it uses as much as digits as its factorization.

12538387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176668.

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

The square root of 12538387 is about 3540.9584860600. The cubic root of 12538387 is about 232.3167678006.

The spelling of 12538387 in words is "twelve million, five hundred thirty-eight thousand, three hundred eighty-seven".