12728004 has 24 divisors (see below), whose sum is σ = 29816640. Its totient is φ = 4225824.

The previous prime is 12727991. The next prime is 12728029. The reversal of 12728004 is 40082721.

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, 1257 + ... + 5199.

It is an arithmetic number, because the mean of its divisors is an integer number (1242360).

Almost surely, 2^12728004 is an apocalyptic number.

It is an amenable number.

12728004 is an abundant number, since it is smaller than the sum of its proper divisors (17088636).

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

12728004 is a wasteful number, since it uses less digits than its factorization.

12728004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4219 (or 4217 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 12728004 is about 3567.6328286414. The cubic root of 12728004 is about 233.4820158953.

The spelling of 12728004 in words is "twelve million, seven hundred twenty-eight thousand, four".