8728329 has 16 divisors (see below), whose sum is σ = 12124160. Its totient is φ = 5579280.

The previous prime is 8728309. The next prime is 8728331. The reversal of 8728329 is 9238278.

It is not a de Polignac number, because 8728329 - 2⁸ = 8728073 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8728309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11442 + ... + 12180.

It is an arithmetic number, because the mean of its divisors is an integer number (757760).

Almost surely, 2^8728329 is an apocalyptic number.

It is an amenable number.

8728329 is a deficient number, since it is larger than the sum of its proper divisors (3395831).

8728329 is a wasteful number, since it uses less digits than its factorization.

8728329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900.

The product of its digits is 48384, while the sum is 39.

The square root of 8728329 is about 2954.3745530992. The cubic root of 8728329 is about 205.8940055462.

The spelling of 8728329 in words is "eight million, seven hundred twenty-eight thousand, three hundred twenty-nine".