189486928 has 40 divisors (see below), whose sum is σ = 381538080. Its totient is φ = 91056000.

The previous prime is 189486919. The next prime is 189486931. The reversal of 189486928 is 829684981.

189486928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 115651 + ... + 117277.

It is an arithmetic number, because the mean of its divisors is an integer number (9538452).

Almost surely, 2^189486928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189486928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190769040).

189486928 is an abundant number, since it is smaller than the sum of its proper divisors (192051152).

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

189486928 is a wasteful number, since it uses less digits than its factorization.

189486928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915 (or 1909 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 55.

The square root of 189486928 is about 13765.4250933271. The cubic root of 189486928 is about 574.3717680483.

The spelling of 189486928 in words is "one hundred eighty-nine million, four hundred eighty-six thousand, nine hundred twenty-eight".