16428004 has 12 divisors (see below), whose sum is σ = 29361024. Its totient is φ = 8039144.

The previous prime is 16427987. The next prime is 16428011. The reversal of 16428004 is 40082461.

It is a self number, because there is not a number n which added to its sum of digits gives 16428004.

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, 43504 + ... + 43879.

It is an arithmetic number, because the mean of its divisors is an integer number (2446752).

Almost surely, 2^16428004 is an apocalyptic number.

It is an amenable number.

16428004 is a deficient number, since it is larger than the sum of its proper divisors (12933020).

16428004 is a wasteful number, since it uses less digits than its factorization.

16428004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87434 (or 87432 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 16428004 is about 4053.1474189819. The cubic root of 16428004 is about 254.2113478497.

The spelling of 16428004 in words is "sixteen million, four hundred twenty-eight thousand, four".