189179928 has 64 divisors (see below), whose sum is σ = 600576000. Its totient is φ = 54050976.

The previous prime is 189179911. The next prime is 189179953. The reversal of 189179928 is 829971981.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61048 + ... + 64071.

It is an arithmetic number, because the mean of its divisors is an integer number (9384000).

Almost surely, 2^189179928 is an apocalyptic number.

189179928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

189179928 is an abundant number, since it is smaller than the sum of its proper divisors (411396072).

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

189179928 is a wasteful number, since it uses less digits than its factorization.

189179928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125141 (or 125131 counting only the distinct ones).

The product of its digits is 653184, while the sum is 54.

The square root of 189179928 is about 13754.2694462483. The cubic root of 189179928 is about 574.0614081210.

The spelling of 189179928 in words is "one hundred eighty-nine million, one hundred seventy-nine thousand, nine hundred twenty-eight".