187164228 has 12 divisors (see below), whose sum is σ = 436716560. Its totient is φ = 62388072.

The previous prime is 187164217. The next prime is 187164233. The reversal of 187164228 is 822461781.

It is a happy number.

187164228 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, 7798498 + ... + 7798521.

Almost surely, 2^187164228 is an apocalyptic number.

It is an amenable number.

187164228 is an abundant number, since it is smaller than the sum of its proper divisors (249552332).

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

187164228 is a wasteful number, since it uses less digits than its factorization.

187164228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15597026 (or 15597024 counting only the distinct ones).

The product of its digits is 43008, while the sum is 39.

The square root of 187164228 is about 13680.7977837552. The cubic root of 187164228 is about 572.0152611378.

The spelling of 187164228 in words is "one hundred eighty-seven million, one hundred sixty-four thousand, two hundred twenty-eight".