12503864 has 8 divisors (see below), whose sum is σ = 23444760. Its totient is φ = 6251928.

The previous prime is 12503863. The next prime is 12503879. The reversal of 12503864 is 46830521.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×12503864² = 312693229860992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12503861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 781484 + ... + 781499.

It is an arithmetic number, because the mean of its divisors is an integer number (2930595).

Almost surely, 2^12503864 is an apocalyptic number.

It is an amenable number.

12503864 is a deficient number, since it is larger than the sum of its proper divisors (10940896).

12503864 is a wasteful number, since it uses less digits than its factorization.

12503864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1562989 (or 1562985 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 12503864 is about 3536.0803158299. The cubic root of 12503864 is about 232.1033526827.

The spelling of 12503864 in words is "twelve million, five hundred three thousand, eight hundred sixty-four".