28647304 has 16 divisors (see below), whose sum is σ = 61387200. Its totient is φ = 12277392.

The previous prime is 28647221. The next prime is 28647341. The reversal of 28647304 is 40374682.

It is a self number, because there is not a number n which added to its sum of digits gives 28647304.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255724 + ... + 255835.

It is an arithmetic number, because the mean of its divisors is an integer number (3836700).

Almost surely, 2^28647304 is an apocalyptic number.

It is an amenable number.

28647304 is an abundant number, since it is smaller than the sum of its proper divisors (32739896).

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

28647304 is a wasteful number, since it uses less digits than its factorization.

28647304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511572 (or 511568 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 28647304 is about 5352.3176288408. The cubic root of 28647304 is about 305.9810887255.

The spelling of 28647304 in words is "twenty-eight million, six hundred forty-seven thousand, three hundred four".