8228156220 has 72 divisors (see below), whose sum is σ = 24986401440. Its totient is φ = 2191743360.

The previous prime is 8228156219. The next prime is 8228156221. The reversal of 8228156220 is 226518228.

8228156220 is a `hidden beast` number, since 8 + 2 + 28 + 1 + 5 + 622 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (8228156219) and next prime (8228156221).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8228156221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 140550 + ... + 190290.

Almost surely, 2^8228156220 is an apocalyptic number.

It is an amenable number.

8228156220 is an abundant number, since it is smaller than the sum of its proper divisors (16758245220).

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

8228156220 is a wasteful number, since it uses less digits than its factorization.

8228156220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50675 (or 50670 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 8228156220 is about 90709.1848712136. The cubic root of 8228156220 is about 2018.8350813602.

The spelling of 8228156220 in words is "eight billion, two hundred twenty-eight million, one hundred fifty-six thousand, two hundred twenty".