189565628 has 12 divisors (see below), whose sum is σ = 379131312. Its totient is φ = 81242400.

The previous prime is 189565601. The next prime is 189565637. The reversal of 189565628 is 826565981.

189565628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

189565628 is an admirable number.

It is a congruent number.

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, 3385073 + ... + 3385128.

It is an arithmetic number, because the mean of its divisors is an integer number (31594276).

Almost surely, 2^189565628 is an apocalyptic number.

It is an amenable number.

189565628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

189565628 is a wasteful number, since it uses less digits than its factorization.

189565628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770212 (or 6770210 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 50.

The square root of 189565628 is about 13768.2834078908. The cubic root of 189565628 is about 574.4512753824.

The spelling of 189565628 in words is "one hundred eighty-nine million, five hundred sixty-five thousand, six hundred twenty-eight".