172012 has 6 divisors (see below), whose sum is σ = 301028. Its totient is φ = 86004.

The previous prime is 172009. The next prime is 172021. The reversal of 172012 is 210271.

It is a junction number, because it is equal to n+sod(n) for n = 171983 and 172001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21498 + ... + 21505.

2¹⁷²⁰¹² is an apocalyptic number.

It is an amenable number.

172012 is a deficient number, since it is larger than the sum of its proper divisors (129016).

172012 is a wasteful number, since it uses less digits than its factorization.

172012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43007 (or 43005 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 172012 is about 414.7432940989. The cubic root of 172012 is about 55.6142709602.

Adding to 172012 its reverse (210271), we get a palindrome (382283).

The spelling of 172012 in words is "one hundred seventy-two thousand, twelve", and thus it is an iban number.