28250804 has 24 divisors (see below), whose sum is σ = 53629128. Its totient is φ = 12968960.

The previous prime is 28250779. The next prime is 28250809. The reversal of 28250804 is 40805282.

It can be written as a sum of positive squares in 4 ways, for example, as 4708900 + 23541904 = 2170^2 + 4852^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28250809) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2279 + ... + 7854.

It is an arithmetic number, because the mean of its divisors is an integer number (2234547).

Almost surely, 2^28250804 is an apocalyptic number.

It is an amenable number.

28250804 is a deficient number, since it is larger than the sum of its proper divisors (25378324).

28250804 is a wasteful number, since it uses less digits than its factorization.

28250804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10195 (or 10193 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 28250804 is about 5315.1485397870. The cubic root of 28250804 is about 304.5628566954.

The spelling of 28250804 in words is "twenty-eight million, two hundred fifty thousand, eight hundred four".