12563988 has 12 divisors (see below), whose sum is σ = 29316000. Its totient is φ = 4187992.

The previous prime is 12563977. The next prime is 12564001. The reversal of 12563988 is 88936521.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523488 + ... + 523511.

It is an arithmetic number, because the mean of its divisors is an integer number (2443000).

Almost surely, 2^12563988 is an apocalyptic number.

It is an amenable number.

12563988 is an abundant number, since it is smaller than the sum of its proper divisors (16752012).

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

12563988 is a wasteful number, since it uses less digits than its factorization.

12563988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047006 (or 1047004 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 12563988 is about 3544.5716243292. The cubic root of 12563988 is about 232.4747758506.

The spelling of 12563988 in words is "twelve million, five hundred sixty-three thousand, nine hundred eighty-eight".