172980328 has 16 divisors (see below), whose sum is σ = 333104580. Its totient is φ = 84152448.

The previous prime is 172980317. The next prime is 172980343. The reversal of 172980328 is 823089271.

172980328 is digitally balanced in base 2, 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 169052004 + 3928324 = 13002^2 + 1982^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291901 + ... + 292492.

Almost surely, 2^172980328 is an apocalyptic number.

It is an amenable number.

172980328 is a deficient number, since it is larger than the sum of its proper divisors (160124252).

172980328 is a wasteful number, since it uses less digits than its factorization.

172980328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584436 (or 584432 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 172980328 is about 13152.1985994738. The cubic root of 172980328 is about 557.1843446267.

The spelling of 172980328 in words is "one hundred seventy-two million, nine hundred eighty thousand, three hundred twenty-eight".