28310804 has 12 divisors (see below), whose sum is σ = 49595700. Its totient is φ = 14140608.

The previous prime is 28310767. The next prime is 28310837. The reversal of 28310804 is 40801382.

It can be written as a sum of positive squares in 2 ways, for example, as 5290000 + 23020804 = 2300^2 + 4798^2 .

It is a congruent number.

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, 1382 + ... + 7650.

It is an arithmetic number, because the mean of its divisors is an integer number (4132975).

Almost surely, 2^28310804 is an apocalyptic number.

It is an amenable number.

28310804 is a deficient number, since it is larger than the sum of its proper divisors (21284896).

28310804 is a wasteful number, since it uses less digits than its factorization.

28310804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7402 (or 7400 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 28310804 is about 5320.7897909991. The cubic root of 28310804 is about 304.7783178180.

The spelling of 28310804 in words is "twenty-eight million, three hundred ten thousand, eight hundred four".