28565044 has 12 divisors (see below), whose sum is σ = 50432004. Its totient is φ = 14155904.

The previous prime is 28565003. The next prime is 28565059. The reversal of 28565044 is 44056582.

It can be written as a sum of positive squares in 2 ways, for example, as 14592400 + 13972644 = 3820^2 + 3738^2 .

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, 31147 + ... + 32050.

It is an arithmetic number, because the mean of its divisors is an integer number (4202667).

Almost surely, 2^28565044 is an apocalyptic number.

It is an amenable number.

28565044 is a deficient number, since it is larger than the sum of its proper divisors (21866960).

28565044 is a wasteful number, since it uses less digits than its factorization.

28565044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63314 (or 63312 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 34.

The square root of 28565044 is about 5344.6275829098. The cubic root of 28565044 is about 305.6879356648.

The spelling of 28565044 in words is "twenty-eight million, five hundred sixty-five thousand, forty-four".