12638032 has 20 divisors (see below), whose sum is σ = 26712576. Its totient is φ = 5744480.

The previous prime is 12638027. The next prime is 12638039. The reversal of 12638032 is 23083621.

It is a junction number, because it is equal to n+sod(n) for n = 12637988 and 12638006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12638039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35728 + ... + 36079.

Almost surely, 2^12638032 is an apocalyptic number.

It is an amenable number.

12638032 is an abundant number, since it is smaller than the sum of its proper divisors (14074544).

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

12638032 is a wasteful number, since it uses less digits than its factorization.

12638032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71826 (or 71820 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 12638032 is about 3555.0009845287. Note that the first 3 decimals coincide. The cubic root of 12638032 is about 232.9305668458.

The spelling of 12638032 in words is "twelve million, six hundred thirty-eight thousand, thirty-two".