8520816 has 40 divisors (see below), whose sum is σ = 23173120. Its totient is φ = 2690496.

The previous prime is 8520803. The next prime is 8520821. The reversal of 8520816 is 6180258.

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, 3760 + ... + 5583.

It is an arithmetic number, because the mean of its divisors is an integer number (579328).

Almost surely, 2^8520816 is an apocalyptic number.

It is an amenable number.

8520816 is an abundant number, since it is smaller than the sum of its proper divisors (14652304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8520816 is a wasteful number, since it uses less digits than its factorization.

8520816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9373 (or 9367 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 8520816 is about 2919.0436790154. The cubic root of 8520816 is about 204.2492148405.

The spelling of 8520816 in words is "eight million, five hundred twenty thousand, eight hundred sixteen".