28355804 has 12 divisors (see below), whose sum is σ = 49689528. Its totient is φ = 14158800.

The previous prime is 28355783. The next prime is 28355827. The reversal of 28355804 is 40855382.

It is a congruent number.

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, 1127 + ... + 7614.

It is an arithmetic number, because the mean of its divisors is an integer number (4140794).

Almost surely, 2^28355804 is an apocalyptic number.

It is an amenable number.

28355804 is a deficient number, since it is larger than the sum of its proper divisors (21333724).

28355804 is a wasteful number, since it uses less digits than its factorization.

28355804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9556 (or 9554 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 28355804 is about 5325.0168074852. The cubic root of 28355804 is about 304.9397139648.

The spelling of 28355804 in words is "twenty-eight million, three hundred fifty-five thousand, eight hundred four".