189062172 has 36 divisors (see below), whose sum is σ = 514670520. Its totient is φ = 58172832.

The previous prime is 189062161. The next prime is 189062177. The reversal of 189062172 is 271260981.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189062177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 201522 + ... + 202457.

Almost surely, 2^189062172 is an apocalyptic number.

189062172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189062172 is an abundant number, since it is smaller than the sum of its proper divisors (325608348).

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

189062172 is a wasteful number, since it uses less digits than its factorization.

189062172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404002 (or 403997 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 189062172 is about 13749.9880727221. The cubic root of 189062172 is about 573.9422742598.

The spelling of 189062172 in words is "one hundred eighty-nine million, sixty-two thousand, one hundred seventy-two".