390172 has 12 divisors (see below), whose sum is σ = 712656. Its totient is φ = 186560.

The previous prime is 390161. The next prime is 390191. The reversal of 390172 is 271093.

It is a congruent number.

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, 2029 + ... + 2212.

It is an arithmetic number, because the mean of its divisors is an integer number (59388).

2³⁹⁰¹⁷² is an apocalyptic number.

It is an amenable number.

390172 is a deficient number, since it is larger than the sum of its proper divisors (322484).

390172 is a wasteful number, since it uses less digits than its factorization.

390172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268 (or 4266 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 390172 is about 624.6374948720. The cubic root of 390172 is about 73.0721748176.

The spelling of 390172 in words is "three hundred ninety thousand, one hundred seventy-two".