12503404 has 24 divisors (see below), whose sum is σ = 22335488. Its totient is φ = 6123600.

The previous prime is 12503371. The next prime is 12503417. The reversal of 12503404 is 40430521.

It is a super-2 number, since 2×12503404² = 312670223174432, which contains 22 as substring.

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, 76627 + ... + 76789.

Almost surely, 2^12503404 is an apocalyptic number.

It is an amenable number.

12503404 is a deficient number, since it is larger than the sum of its proper divisors (9832084).

12503404 is a wasteful number, since it uses less digits than its factorization.

12503404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 12503404 is about 3536.0152714602. The cubic root of 12503404 is about 232.1005063932.

Adding to 12503404 its reverse (40430521), we get a palindrome (52933925).

The spelling of 12503404 in words is "twelve million, five hundred three thousand, four hundred four".