28565450 has 24 divisors (see below), whose sum is σ = 53931072. Its totient is φ = 11254320.

The previous prime is 28565447. The next prime is 28565483. The reversal of 28565450 is 5456582.

It is a self number, because there is not a number n which added to its sum of digits gives 28565450.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 914 + ... + 7613.

It is an arithmetic number, because the mean of its divisors is an integer number (2247128).

Almost surely, 2^28565450 is an apocalyptic number.

28565450 is a deficient number, since it is larger than the sum of its proper divisors (25365622).

28565450 is a wasteful number, since it uses less digits than its factorization.

28565450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8606 (or 8601 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 28565450 is about 5344.6655648413. The cubic root of 28565450 is about 305.6893839235.

The spelling of 28565450 in words is "twenty-eight million, five hundred sixty-five thousand, four hundred fifty".