28544084 has 6 divisors (see below), whose sum is σ = 49952154. Its totient is φ = 14272040.

The previous prime is 28544063. The next prime is 28544107. The reversal of 28544084 is 48044582.

It can be written as a sum of positive squares in only one way, i.e., 24780484 + 3763600 = 4978^2 + 1940^2 .

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, 3568007 + ... + 3568014.

It is an arithmetic number, because the mean of its divisors is an integer number (8325359).

Almost surely, 2^28544084 is an apocalyptic number.

It is an amenable number.

28544084 is a deficient number, since it is larger than the sum of its proper divisors (21408070).

28544084 is a wasteful number, since it uses less digits than its factorization.

28544084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7136025 (or 7136023 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 35.

The square root of 28544084 is about 5342.6663755095. Note that the first 3 decimals coincide. The cubic root of 28544084 is about 305.6131497727.

The spelling of 28544084 in words is "twenty-eight million, five hundred forty-four thousand, eighty-four".