189647628 has 12 divisors (see below), whose sum is σ = 442511160. Its totient is φ = 63215872.

The previous prime is 189647609. The next prime is 189647641. The reversal of 189647628 is 826746981.

189647628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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, 7901973 + ... + 7901996.

It is an arithmetic number, because the mean of its divisors is an integer number (36875930).

Almost surely, 2^189647628 is an apocalyptic number.

It is an amenable number.

189647628 is an abundant number, since it is smaller than the sum of its proper divisors (252863532).

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

189647628 is a wasteful number, since it uses less digits than its factorization.

189647628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15803976 (or 15803974 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 189647628 is about 13771.2609444451. The cubic root of 189647628 is about 574.5340931638.

The spelling of 189647628 in words is "one hundred eighty-nine million, six hundred forty-seven thousand, six hundred twenty-eight".