8220422628 has 72 divisors (see below), whose sum is σ = 22679014176. Its totient is φ = 2489875200.

The previous prime is 8220422591. The next prime is 8220422653. The reversal of 8220422628 is 8262240228.

8220422628 is a `hidden beast` number, since 8 + 2 + 2 + 0 + 4 + 22 + 628 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 8220422592 and 8220422601.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1265148 + ... + 1271628.

It is an arithmetic number, because the mean of its divisors is an integer number (314986308).

Almost surely, 2^8220422628 is an apocalyptic number.

It is an amenable number.

8220422628 is an abundant number, since it is smaller than the sum of its proper divisors (14458591548).

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

8220422628 is a wasteful number, since it uses less digits than its factorization.

8220422628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9705 (or 9700 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 8220422628 is about 90666.5463553123. The cubic root of 8220422628 is about 2018.2023863211.

The spelling of 8220422628 in words is "eight billion, two hundred twenty million, four hundred twenty-two thousand, six hundred twenty-eight".