8423167220 has 24 divisors (see below), whose sum is σ = 19049317224. Its totient is φ = 3110092416.

The previous prime is 8423167217. The next prime is 8423167237. The reversal of 8423167220 is 227613248.

It can be written as a sum of positive squares in 4 ways, for example, as 335402596 + 8087764624 = 18314^2 + 89932^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16198139 + ... + 16198658.

It is an arithmetic number, because the mean of its divisors is an integer number (793721551).

Almost surely, 2^8423167220 is an apocalyptic number.

It is an amenable number.

8423167220 is an abundant number, since it is smaller than the sum of its proper divisors (10626150004).

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

8423167220 is a wasteful number, since it uses less digits than its factorization.

8423167220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32396819 (or 32396817 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 8423167220 is about 91777.8144215692. The cubic root of 8423167220 is about 2034.6598139060.

The spelling of 8423167220 in words is "eight billion, four hundred twenty-three million, one hundred sixty-seven thousand, two hundred twenty".