12638087 has 24 divisors (see below), whose sum is σ = 16291968. Its totient is φ = 9591120.

The previous prime is 12638083. The next prime is 12638099. The reversal of 12638087 is 78083621.

12638087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12638087 - 2² = 12638083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638083) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36248 + ... + 36594.

It is an arithmetic number, because the mean of its divisors is an integer number (678832).

Almost surely, 2^12638087 is an apocalyptic number.

12638087 is a deficient number, since it is larger than the sum of its proper divisors (3653881).

12638087 is a wasteful number, since it uses less digits than its factorization.

12638087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 12638087 is about 3555.0087201018. The cubic root of 12638087 is about 232.9309047456.

The spelling of 12638087 in words is "twelve million, six hundred thirty-eight thousand, eighty-seven".