8220128 has 24 divisors (see below), whose sum is σ = 18495792. Its totient is φ = 3522816.

The previous prime is 8220109. The next prime is 8220139. The reversal of 8220128 is 8210228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18125 + ... + 18572.

It is an arithmetic number, because the mean of its divisors is an integer number (770658).

Almost surely, 2^8220128 is an apocalyptic number.

It is an amenable number.

8220128 is an abundant number, since it is smaller than the sum of its proper divisors (10275664).

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

8220128 is a wasteful number, since it uses less digits than its factorization.

8220128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36714 (or 36706 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 8220128 is about 2867.0765598428. The cubic root of 8220128 is about 201.8178274583.

The spelling of 8220128 in words is "eight million, two hundred twenty thousand, one hundred twenty-eight".