189028886 has 16 divisors (see below), whose sum is σ = 295291008. Its totient is φ = 90652800.

The previous prime is 189028871. The next prime is 189028919. The reversal of 189028886 is 688820981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6485 + ... + 20496.

It is an arithmetic number, because the mean of its divisors is an integer number (18455688).

Almost surely, 2^189028886 is an apocalyptic number.

189028886 is a deficient number, since it is larger than the sum of its proper divisors (106262122).

189028886 is a wasteful number, since it uses less digits than its factorization.

189028886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27127.

The product of its (nonzero) digits is 442368, while the sum is 50.

The square root of 189028886 is about 13748.7776183921. Note that the first 3 decimals coincide. The cubic root of 189028886 is about 573.9085898134.

The spelling of 189028886 in words is "one hundred eighty-nine million, twenty-eight thousand, eight hundred eighty-six".