189432928 has 12 divisors (see below), whose sum is σ = 372946140. Its totient is φ = 94716448.

The previous prime is 189432923. The next prime is 189432937. The reversal of 189432928 is 829234981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189432923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2959858 + ... + 2959921.

It is an arithmetic number, because the mean of its divisors is an integer number (31078845).

Almost surely, 2^189432928 is an apocalyptic number.

It is an amenable number.

189432928 is a deficient number, since it is larger than the sum of its proper divisors (183513212).

189432928 is an equidigital number, since it uses as much as digits as its factorization.

189432928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5919789 (or 5919781 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 189432928 is about 13763.4635175889. The cubic root of 189432928 is about 574.3172013603.

The spelling of 189432928 in words is "one hundred eighty-nine million, four hundred thirty-two thousand, nine hundred twenty-eight".