438172 has 12 divisors (see below), whose sum is σ = 876400. Its totient is φ = 187776.

The previous prime is 438169. The next prime is 438203. The reversal of 438172 is 271834.

438172 is an admirable number.

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, 7797 + ... + 7852.

2⁴³⁸¹⁷² is an apocalyptic number.

It is an amenable number.

438172 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

438172 is a wasteful number, since it uses less digits than its factorization.

438172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15660 (or 15658 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 438172 is about 661.9456171016. The cubic root of 438172 is about 75.9535727521.

The spelling of 438172 in words is "four hundred thirty-eight thousand, one hundred seventy-two".