12638136 has 32 divisors (see below), whose sum is σ = 36109440. Its totient is φ = 3610848.

The previous prime is 12638099. The next prime is 12638147. The reversal of 12638136 is 63183621.

12638136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×12638136³ (a number of 22 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37446 + ... + 37781.

It is an arithmetic number, because the mean of its divisors is an integer number (1128420).

Almost surely, 2^12638136 is an apocalyptic number.

It is an amenable number.

12638136 is an abundant number, since it is smaller than the sum of its proper divisors (23471304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12638136 is a wasteful number, since it uses less digits than its factorization.

12638136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75243 (or 75239 counting only the distinct ones).

The product of its digits is 5184, while the sum is 30.

The square root of 12638136 is about 3555.0156117801. The cubic root of 12638136 is about 232.9312057827.

The spelling of 12638136 in words is "twelve million, six hundred thirty-eight thousand, one hundred thirty-six".