28266304 has 28 divisors (see below), whose sum is σ = 61191648. Its totient is φ = 12848000.

The previous prime is 28266299. The next prime is 28266341. The reversal of 28266304 is 40366282.

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, 19372 + ... + 20779.

It is an arithmetic number, because the mean of its divisors is an integer number (2185416).

Almost surely, 2^28266304 is an apocalyptic number.

It is an amenable number.

28266304 is an abundant number, since it is smaller than the sum of its proper divisors (32925344).

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

28266304 is a wasteful number, since it uses less digits than its factorization.

28266304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40174 (or 40164 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 28266304 is about 5316.6064364404. The cubic root of 28266304 is about 304.6185466879.

The spelling of 28266304 in words is "twenty-eight million, two hundred sixty-six thousand, three hundred four".