8220990228 has 36 divisors (see below), whose sum is σ = 21084692160. Its totient is φ = 2491208720.

The previous prime is 8220990227. The next prime is 8220990241.

8220990228 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 8220990228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8220990227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2829468 + ... + 2832371.

Almost surely, 2^8220990228 is an apocalyptic number.

It is an amenable number.

8220990228 is an abundant number, since it is smaller than the sum of its proper divisors (12863701932).

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

8220990228 is a wasteful number, since it uses less digits than its factorization.

8220990228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5661868 (or 5661855 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 8220990228 is about 90669.6764524943. The cubic root of 8220990228 is about 2018.2488358920.

The spelling of 8220990228 in words is "eight billion, two hundred twenty million, nine hundred ninety thousand, two hundred twenty-eight".