8529728 has 14 divisors (see below), whose sum is σ = 16926306. Its totient is φ = 4264832.

The previous prime is 8529707. The next prime is 8529749. The reversal of 8529728 is 8279258.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8529707) and next prime (8529749).

It can be written as a sum of positive squares in only one way, i.e., 7011904 + 1517824 = 2648^2 + 1232^2 .

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66575 + ... + 66702.

Almost surely, 2^8529728 is an apocalyptic number.

It is an amenable number.

8529728 is a deficient number, since it is larger than the sum of its proper divisors (8396578).

8529728 is a wasteful number, since it uses less digits than its factorization.

8529728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133289 (or 133279 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 8529728 is about 2920.5698074177. The cubic root of 8529728 is about 204.3203987411.

The spelling of 8529728 in words is "eight million, five hundred twenty-nine thousand, seven hundred twenty-eight".