12946638 has 16 divisors (see below), whose sum is σ = 27256320. Its totient is φ = 4088376.

The previous prime is 12946621. The next prime is 12946649. The reversal of 12946638 is 83664921.

12946638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12946596 and 12946605.

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, 56670 + ... + 56897.

It is an arithmetic number, because the mean of its divisors is an integer number (1703520).

Almost surely, 2^12946638 is an apocalyptic number.

12946638 is an abundant number, since it is smaller than the sum of its proper divisors (14309682).

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

12946638 is a wasteful number, since it uses less digits than its factorization.

12946638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113591.

The product of its digits is 62208, while the sum is 39.

The square root of 12946638 is about 3598.1436880703. The cubic root of 12946638 is about 234.8113046902.

The spelling of 12946638 in words is "twelve million, nine hundred forty-six thousand, six hundred thirty-eight".