17996172 has 12 divisors (see below), whose sum is σ = 41991096. Its totient is φ = 5998720.

The previous prime is 17996141. The next prime is 17996177. The reversal of 17996172 is 27169971.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (17996177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749829 + ... + 749852.

It is an arithmetic number, because the mean of its divisors is an integer number (3499258).

Almost surely, 2^17996172 is an apocalyptic number.

17996172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

17996172 is an abundant number, since it is smaller than the sum of its proper divisors (23994924).

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

17996172 is a wasteful number, since it uses less digits than its factorization.

17996172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499688 (or 1499686 counting only the distinct ones).

The product of its digits is 47628, while the sum is 42.

The square root of 17996172 is about 4242.1895290050. The cubic root of 17996172 is about 262.0555599592.

The spelling of 17996172 in words is "seventeen million, nine hundred ninety-six thousand, one hundred seventy-two".