12928404 has 24 divisors (see below), whose sum is σ = 30467808. Its totient is φ = 4266400.

The previous prime is 12928397. The next prime is 12928427. The reversal of 12928404 is 40482921.

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, 4122 + ... + 6545.

It is an arithmetic number, because the mean of its divisors is an integer number (1269492).

Almost surely, 2^12928404 is an apocalyptic number.

It is an amenable number.

12928404 is an abundant number, since it is smaller than the sum of its proper divisors (17539404).

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

12928404 is a wasteful number, since it uses less digits than its factorization.

12928404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10775 (or 10773 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 12928404 is about 3595.6089887528. The cubic root of 12928404 is about 234.7010170890.

The spelling of 12928404 in words is "twelve million, nine hundred twenty-eight thousand, four hundred four".