8220420176 has 20 divisors (see below), whose sum is σ = 16863950772. Its totient is φ = 3868432896.

The previous prime is 8220420157. The next prime is 8220420217. The reversal of 8220420176 is 6710240228.

It can be written as a sum of positive squares in 2 ways, for example, as 5247553600 + 2972866576 = 72440^2 + 54524^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15110795 + ... + 15111338.

Almost surely, 2^8220420176 is an apocalyptic number.

It is an amenable number.

8220420176 is an abundant number, since it is smaller than the sum of its proper divisors (8643530596).

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

8220420176 is a wasteful number, since it uses less digits than its factorization.

8220420176 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30222158 (or 30222152 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 8220420176 is about 90666.5328332346. The cubic root of 8220420176 is about 2018.2021856570.

The spelling of 8220420176 in words is "eight billion, two hundred twenty million, four hundred twenty thousand, one hundred seventy-six".