172247212 has 18 divisors (see below), whose sum is σ = 303538452. Its totient is φ = 85526064.

The previous prime is 172247189. The next prime is 172247221. The reversal of 172247212 is 212742271.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 97723 + ... + 99469.

Almost surely, 2^172247212 is an apocalyptic number.

It is an amenable number.

172247212 is a deficient number, since it is larger than the sum of its proper divisors (131291240).

172247212 is a wasteful number, since it uses less digits than its factorization.

172247212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065 (or 1906 counting only the distinct ones).

The product of its digits is 3136, while the sum is 28.

The square root of 172247212 is about 13124.2985336360. The cubic root of 172247212 is about 556.3960870014.

Adding to 172247212 its reverse (212742271), we get a palindrome (384989483).

The spelling of 172247212 in words is "one hundred seventy-two million, two hundred forty-seven thousand, two hundred twelve".