8172912 has 80 divisors (see below), whose sum is σ = 24069888. Its totient is φ = 2365440.

The previous prime is 8172911. The next prime is 8172917. The reversal of 8172912 is 2192718.

8172912 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 8172912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8172911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11808 + ... + 12480.

Almost surely, 2^8172912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8172912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12034944).

8172912 is an abundant number, since it is smaller than the sum of its proper divisors (15896976).

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

8172912 is a wasteful number, since it uses less digits than its factorization.

8172912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 712 counting only the distinct ones).

The product of its digits is 2016, while the sum is 30.

The square root of 8172912 is about 2858.8305301294. The cubic root of 8172912 is about 201.4306747788.

The spelling of 8172912 in words is "eight million, one hundred seventy-two thousand, nine hundred twelve".