12640504 has 16 divisors (see below), whose sum is σ = 23789520. Its totient is φ = 6296640.

The previous prime is 12640499. The next prime is 12640513. The reversal of 12640504 is 40504621.

It is a zygodrome in base 2.

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, 564 + ... + 5059.

It is an arithmetic number, because the mean of its divisors is an integer number (1486845).

Almost surely, 2^12640504 is an apocalyptic number.

It is an amenable number.

12640504 is a deficient number, since it is larger than the sum of its proper divisors (11149016).

12640504 is a wasteful number, since it uses less digits than its factorization.

12640504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5910 (or 5906 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 12640504 is about 3555.3486467574. The cubic root of 12640504 is about 232.9457529345.

The spelling of 12640504 in words is "twelve million, six hundred forty thousand, five hundred four".