8198172 has 30 divisors (see below), whose sum is σ = 21432488. Its totient is φ = 2732616.

The previous prime is 8198147. The next prime is 8198191. The reversal of 8198172 is 2718918.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 12328 + ... + 12975.

Almost surely, 2^8198172 is an apocalyptic number.

It is an amenable number.

8198172 is an abundant number, since it is smaller than the sum of its proper divisors (13234316).

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

8198172 is a wasteful number, since it uses less digits than its factorization.

8198172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25319 (or 25308 counting only the distinct ones).

The product of its digits is 8064, while the sum is 36.

The square root of 8198172 is about 2863.2450122195. The cubic root of 8198172 is about 201.6379817893.

The spelling of 8198172 in words is "eight million, one hundred ninety-eight thousand, one hundred seventy-two".