8222172 has 24 divisors (see below), whose sum is σ = 21926016. Its totient is φ = 2349168.

The previous prime is 8222153. The next prime is 8222183. The reversal of 8222172 is 2712228.

It is a happy number.

It is a super-2 number, since 2×8222172² = 135208224795168, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48858 + ... + 49025.

It is an arithmetic number, because the mean of its divisors is an integer number (913584).

Almost surely, 2^8222172 is an apocalyptic number.

It is an amenable number.

8222172 is an abundant number, since it is smaller than the sum of its proper divisors (13703844).

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

8222172 is a wasteful number, since it uses less digits than its factorization.

8222172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97897 (or 97895 counting only the distinct ones).

The product of its digits is 896, while the sum is 24.

The square root of 8222172 is about 2867.4329983454. The cubic root of 8222172 is about 201.8345539396.

The spelling of 8222172 in words is "eight million, two hundred twenty-two thousand, one hundred seventy-two".