8729816 has 32 divisors (see below), whose sum is σ = 17472000. Its totient is φ = 4077216.

The previous prime is 8729801. The next prime is 8729821. The reversal of 8729816 is 6189278.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11645 + ... + 12371.

It is an arithmetic number, because the mean of its divisors is an integer number (546000).

Almost surely, 2^8729816 is an apocalyptic number.

It is an amenable number.

8729816 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

8729816 is a wasteful number, since it uses less digits than its factorization.

8729816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831 (or 827 counting only the distinct ones).

The product of its digits is 48384, while the sum is 41.

The square root of 8729816 is about 2954.6262030924. The cubic root of 8729816 is about 205.9056972457.

The spelling of 8729816 in words is "eight million, seven hundred twenty-nine thousand, eight hundred sixteen".