172538672 has 20 divisors (see below), whose sum is σ = 334718160. Its totient is φ = 86159808.

The previous prime is 172538633. The next prime is 172538713. The reversal of 172538672 is 276835271.

172538672 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

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, 6998 + ... + 19850.

It is an arithmetic number, because the mean of its divisors is an integer number (16735908).

Almost surely, 2^172538672 is an apocalyptic number.

It is an amenable number.

172538672 is a deficient number, since it is larger than the sum of its proper divisors (162179488).

172538672 is a wasteful number, since it uses less digits than its factorization.

172538672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13700 (or 13694 counting only the distinct ones).

The product of its digits is 141120, while the sum is 41.

The square root of 172538672 is about 13135.3976719397. The cubic root of 172538672 is about 556.7097366287.

The spelling of 172538672 in words is "one hundred seventy-two million, five hundred thirty-eight thousand, six hundred seventy-two".