173212328 has 16 divisors (see below), whose sum is σ = 325984500. Its totient is φ = 86283136.

The previous prime is 173212327. The next prime is 173212357. The reversal of 173212328 is 823212371.

173212328 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 172607044 + 605284 = 13138^2 + 778^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 173212328.

It is not an unprimeable number, because it can be changed into a prime (173212327) 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, 38093 + ... + 42396.

Almost surely, 2^173212328 is an apocalyptic number.

It is an amenable number.

173212328 is a deficient number, since it is larger than the sum of its proper divisors (152772172).

173212328 is a wasteful number, since it uses less digits than its factorization.

173212328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80764 (or 80760 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 173212328 is about 13161.0154623418. The cubic root of 173212328 is about 557.4333305892.

Adding to 173212328 its reverse (823212371), we get a palindrome (996424699).

The spelling of 173212328 in words is "one hundred seventy-three million, two hundred twelve thousand, three hundred twenty-eight".