189266928 has 20 divisors (see below), whose sum is σ = 488939688. Its totient is φ = 63088960.

The previous prime is 189266927. The next prime is 189266941. The reversal of 189266928 is 829662981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189266921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1971483 + ... + 1971578.

Almost surely, 2^189266928 is an apocalyptic number.

It is an amenable number.

189266928 is an abundant number, since it is smaller than the sum of its proper divisors (299672760).

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

189266928 is a wasteful number, since it uses less digits than its factorization.

189266928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3943072 (or 3943066 counting only the distinct ones).

The product of its digits is 746496, while the sum is 51.

The square root of 189266928 is about 13757.4317370649. The cubic root of 189266928 is about 574.1493943554.

The spelling of 189266928 in words is "one hundred eighty-nine million, two hundred sixty-six thousand, nine hundred twenty-eight".