189172 has 6 divisors (see below), whose sum is σ = 331058. Its totient is φ = 94584.

The previous prime is 189169. The next prime is 189187. The reversal of 189172 is 271981.

It can be written as a sum of positive squares in only one way, i.e., 164836 + 24336 = 406^2 + 156^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 189172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23643 + ... + 23650.

2¹⁸⁹¹⁷² is an apocalyptic number.

It is an amenable number.

189172 is a deficient number, since it is larger than the sum of its proper divisors (141886).

189172 is a wasteful number, since it uses less digits than its factorization.

189172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47297 (or 47295 counting only the distinct ones).

The product of its digits is 1008, while the sum is 28.

The square root of 189172 is about 434.9390761934. The cubic root of 189172 is about 57.4053388908.

It can be divided in two parts, 189 and 172, that added together give a square (361 = 19²).

The spelling of 189172 in words is "one hundred eighty-nine thousand, one hundred seventy-two".