172330836 has 96 divisors (see below), whose sum is σ = 452511360. Its totient is φ = 50724864.

The previous prime is 172330813. The next prime is 172330843. The reversal of 172330836 is 638033271.

It is a junction number, because it is equal to n+sod(n) for n = 172330797 and 172330806.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 670420 + ... + 670676.

It is an arithmetic number, because the mean of its divisors is an integer number (4713660).

Almost surely, 2^172330836 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 172330836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226255680).

172330836 is an abundant number, since it is smaller than the sum of its proper divisors (280180524).

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

172330836 is a wasteful number, since it uses less digits than its factorization.

172330836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 33.

The square root of 172330836 is about 13127.4839935153. The cubic root of 172330836 is about 556.4861136909.

It can be divided in two parts, 172330 and 836, that added together give a triangular number (173166 = T₅₈₈).

The spelling of 172330836 in words is "one hundred seventy-two million, three hundred thirty thousand, eight hundred thirty-six".