12928645 has 32 divisors (see below), whose sum is σ = 17498880. Its totient is φ = 9123840.

The previous prime is 12928637. The next prime is 12928673. The reversal of 12928645 is 54682921.

It is not a de Polignac number, because 12928645 - 2³ = 12928637 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133237 + ... + 133333.

It is an arithmetic number, because the mean of its divisors is an integer number (546840).

Almost surely, 2^12928645 is an apocalyptic number.

It is an amenable number.

12928645 is a deficient number, since it is larger than the sum of its proper divisors (4570235).

12928645 is a wasteful number, since it uses less digits than its factorization.

12928645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205.

The product of its digits is 34560, while the sum is 37.

The square root of 12928645 is about 3595.6425016956. The cubic root of 12928645 is about 234.7024754437.

The spelling of 12928645 in words is "twelve million, nine hundred twenty-eight thousand, six hundred forty-five".