28064584 has 8 divisors (see below), whose sum is σ = 52621110. Its totient is φ = 14032288.

The previous prime is 28064581. The next prime is 28064599. The reversal of 28064584 is 48546082.

It can be written as a sum of positive squares in only one way, i.e., 26316900 + 1747684 = 5130^2 + 1322^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (28064581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1754029 + ... + 1754044.

Almost surely, 2^28064584 is an apocalyptic number.

It is an amenable number.

28064584 is a deficient number, since it is larger than the sum of its proper divisors (24556526).

28064584 is a wasteful number, since it uses less digits than its factorization.

28064584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508079 (or 3508075 counting only the distinct ones).

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

The square root of 28064584 is about 5297.6017215340. The cubic root of 28064584 is about 303.8921882240.

The spelling of 28064584 in words is "twenty-eight million, sixty-four thousand, five hundred eighty-four".