8206520 has 96 divisors (see below), whose sum is σ = 22161600. Its totient is φ = 2725632.

The previous prime is 8206511. The next prime is 8206531. The reversal of 8206520 is 256028.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103841 + ... + 103919.

It is an arithmetic number, because the mean of its divisors is an integer number (230850).

Almost surely, 2^8206520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8206520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11080800).

8206520 is an abundant number, since it is smaller than the sum of its proper divisors (13955080).

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

8206520 is a wasteful number, since it uses less digits than its factorization.

8206520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 8206520 is about 2864.7024278274. The cubic root of 8206520 is about 201.7063995963.

The spelling of 8206520 in words is "eight million, two hundred six thousand, five hundred twenty".