189890228 has 24 divisors (see below), whose sum is σ = 367489920. Its totient is φ = 85129920.

The previous prime is 189890227. The next prime is 189890243. The reversal of 189890228 is 822098981.

189890228 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189890227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26348 + ... + 32771.

It is an arithmetic number, because the mean of its divisors is an integer number (15312080).

Almost surely, 2^189890228 is an apocalyptic number.

It is an amenable number.

189890228 is a deficient number, since it is larger than the sum of its proper divisors (177599692).

189890228 is a wasteful number, since it uses less digits than its factorization.

189890228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59207 (or 59205 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 47.

The square root of 189890228 is about 13780.0663278520. The cubic root of 189890228 is about 574.7789728942.

The spelling of 189890228 in words is "one hundred eighty-nine million, eight hundred ninety thousand, two hundred twenty-eight".