172135372 has 6 divisors (see below), whose sum is σ = 301236908. Its totient is φ = 86067684.

The previous prime is 172135367. The next prime is 172135429. The reversal of 172135372 is 273531271.

172135372 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21516918 + ... + 21516925.

Almost surely, 2^172135372 is an apocalyptic number.

It is an amenable number.

172135372 is a deficient number, since it is larger than the sum of its proper divisors (129101536).

172135372 is a wasteful number, since it uses less digits than its factorization.

172135372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43033847 (or 43033845 counting only the distinct ones).

The product of its digits is 8820, while the sum is 31.

The square root of 172135372 is about 13120.0370426306. The cubic root of 172135372 is about 556.2756383924.

The spelling of 172135372 in words is "one hundred seventy-two million, one hundred thirty-five thousand, three hundred seventy-two".