8220522 has 32 divisors (see below), whose sum is σ = 17418240. Its totient is φ = 2581040.

The previous prime is 8220517. The next prime is 8220523. The reversal of 8220522 is 2250228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8220523) 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, 9379 + ... + 10217.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

Almost surely, 2^8220522 is an apocalyptic number.

8220522 is an abundant number, since it is smaller than the sum of its proper divisors (9197718).

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

8220522 is a wasteful number, since it uses less digits than its factorization.

8220522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 8220522 is about 2867.1452701250. The cubic root of 8220522 is about 201.8210518588.

The spelling of 8220522 in words is "eight million, two hundred twenty thousand, five hundred twenty-two".