8728529 has 8 divisors (see below), whose sum is σ = 8928192. Its totient is φ = 8531280.

The previous prime is 8728513. The next prime is 8728549. The reversal of 8728529 is 9258278.

It is a happy number.

8728529 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8728529 - 2⁴ = 8728513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8728549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8039 + ... + 9059.

It is an arithmetic number, because the mean of its divisors is an integer number (1116024).

Almost surely, 2^8728529 is an apocalyptic number.

It is an amenable number.

8728529 is a deficient number, since it is larger than the sum of its proper divisors (199663).

8728529 is a wasteful number, since it uses less digits than its factorization.

8728529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207.

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

The square root of 8728529 is about 2954.4084010170. The cubic root of 8728529 is about 205.8955781452.

The spelling of 8728529 in words is "eight million, seven hundred twenty-eight thousand, five hundred twenty-nine".