28564084 has 6 divisors (see below), whose sum is σ = 49987154. Its totient is φ = 14282040.

The previous prime is 28564079. The next prime is 28564099. The reversal of 28564084 is 48046582.

It can be written as a sum of positive squares in only one way, i.e., 27331984 + 1232100 = 5228^2 + 1110^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3570507 + ... + 3570514.

Almost surely, 2^28564084 is an apocalyptic number.

It is an amenable number.

28564084 is a deficient number, since it is larger than the sum of its proper divisors (21423070).

28564084 is a wasteful number, since it uses less digits than its factorization.

28564084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7141025 (or 7141023 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 28564084 is about 5344.5377723429. The cubic root of 28564084 is about 305.6845111564.

The spelling of 28564084 in words is "twenty-eight million, five hundred sixty-four thousand, eighty-four".