28897304 has 16 divisors (see below), whose sum is σ = 54240720. Its totient is φ = 14433120.

The previous prime is 28897303. The next prime is 28897307. The reversal of 28897304 is 40379882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28897303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11174 + ... + 13514.

It is an arithmetic number, because the mean of its divisors is an integer number (3390045).

Almost surely, 2^28897304 is an apocalyptic number.

It is an amenable number.

28897304 is a deficient number, since it is larger than the sum of its proper divisors (25343416).

28897304 is a wasteful number, since it uses less digits than its factorization.

28897304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890 (or 3886 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 28897304 is about 5375.6212664212. The cubic root of 28897304 is about 306.8685931191.

The spelling of 28897304 in words is "twenty-eight million, eight hundred ninety-seven thousand, three hundred four".