172328 has 16 divisors (see below), whose sum is σ = 348180. Its totient is φ = 79488.

The previous prime is 172321. The next prime is 172331. The reversal of 172328 is 823271.

It can be written as a sum of positive squares in 2 ways, for example, as 158404 + 13924 = 398^2 + 118^2 .

It is not an unprimeable number, because it can be changed into a prime (172321) 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, 725 + ... + 932.

2¹⁷²³²⁸ is an apocalyptic number.

It is an amenable number.

172328 is an abundant number, since it is smaller than the sum of its proper divisors (175852).

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

172328 is a wasteful number, since it uses less digits than its factorization.

172328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676 (or 1672 counting only the distinct ones).

The product of its digits is 672, while the sum is 23.

The square root of 172328 is about 415.1240778370. The cubic root of 172328 is about 55.6483061029.

Adding to 172328 its reverse (823271), we get a palindrome (995599).

The spelling of 172328 in words is "one hundred seventy-two thousand, three hundred twenty-eight".