189472928 has 24 divisors (see below), whose sum is σ = 373355892. Its totient is φ = 94652416.

The previous prime is 189472909. The next prime is 189472937. The reversal of 189472928 is 829274981.

It can be written as a sum of positive squares in 2 ways, for example, as 117765904 + 71707024 = 10852^2 + 8468^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50576 + ... + 54192.

Almost surely, 2^189472928 is an apocalyptic number.

It is an amenable number.

189472928 is a deficient number, since it is larger than the sum of its proper divisors (183882964).

189472928 is a wasteful number, since it uses less digits than its factorization.

189472928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5264 (or 5256 counting only the distinct ones).

The product of its digits is 580608, while the sum is 50.

The square root of 189472928 is about 13764.9165634958. The cubic root of 189472928 is about 574.3576221247.

The spelling of 189472928 in words is "one hundred eighty-nine million, four hundred seventy-two thousand, nine hundred twenty-eight".