8422172 has 12 divisors (see below), whose sum is σ = 16078776. Its totient is φ = 3828240.

The previous prime is 8422153. The next prime is 8422181. The reversal of 8422172 is 2712248.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95663 + ... + 95750.

It is an arithmetic number, because the mean of its divisors is an integer number (1339898).

Almost surely, 2^8422172 is an apocalyptic number.

It is an amenable number.

8422172 is a deficient number, since it is larger than the sum of its proper divisors (7656604).

8422172 is a wasteful number, since it uses less digits than its factorization.

8422172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191428 (or 191426 counting only the distinct ones).

The product of its digits is 1792, while the sum is 26.

The square root of 8422172 is about 2902.0978618923. The cubic root of 8422172 is about 203.4579677229.

The spelling of 8422172 in words is "eight million, four hundred twenty-two thousand, one hundred seventy-two".