406172 has 24 divisors (see below), whose sum is σ = 783216. Its totient is φ = 183168.

The previous prime is 406171. The next prime is 406177. The reversal of 406172 is 271604.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 406172.

It is not an unprimeable number, because it can be changed into a prime (406171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3743 + ... + 3849.

It is an arithmetic number, because the mean of its divisors is an integer number (32634).

2⁴⁰⁶¹⁷² is an apocalyptic number.

It is an amenable number.

406172 is a deficient number, since it is larger than the sum of its proper divisors (377044).

406172 is a wasteful number, since it uses less digits than its factorization.

406172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 406172 is about 637.3162480276. The cubic root of 406172 is about 74.0576614131.

Adding to 406172 its reverse (271604), we get a palindrome (677776).

The spelling of 406172 in words is "four hundred six thousand, one hundred seventy-two".