28173064 has 8 divisors (see below), whose sum is σ = 52824510. Its totient is φ = 14086528.

The previous prime is 28173053. The next prime is 28173071. The reversal of 28173064 is 46037182.

It can be written as a sum of positive squares in only one way, i.e., 18992164 + 9180900 = 4358^2 + 3030^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760809 + ... + 1760824.

Almost surely, 2^28173064 is an apocalyptic number.

It is an amenable number.

28173064 is a deficient number, since it is larger than the sum of its proper divisors (24651446).

28173064 is a wasteful number, since it uses less digits than its factorization.

28173064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3521639 (or 3521635 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 28173064 is about 5307.8304419037. The cubic root of 28173064 is about 304.2832367190.

The spelling of 28173064 in words is "twenty-eight million, one hundred seventy-three thousand, sixty-four".