188128268 has 24 divisors (see below), whose sum is σ = 338121168. Its totient is φ = 91538496.

The previous prime is 188128231. The next prime is 188128277. The reversal of 188128268 is 862821881.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48530 + ... + 52262.

It is an arithmetic number, because the mean of its divisors is an integer number (14088382).

Almost surely, 2^188128268 is an apocalyptic number.

It is an amenable number.

188128268 is a deficient number, since it is larger than the sum of its proper divisors (149992900).

188128268 is a wasteful number, since it uses less digits than its factorization.

188128268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4073 (or 4071 counting only the distinct ones).

The product of its digits is 98304, while the sum is 44.

The square root of 188128268 is about 13715.9858559274. The cubic root of 188128268 is about 572.9956862050.

The spelling of 188128268 in words is "one hundred eighty-eight million, one hundred twenty-eight thousand, two hundred sixty-eight".