188813028 has 12 divisors (see below), whose sum is σ = 440563760. Its totient is φ = 62937672.

The previous prime is 188813011. The next prime is 188813063. The reversal of 188813028 is 820318881.

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

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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, 7867198 + ... + 7867221.

Almost surely, 2^188813028 is an apocalyptic number.

It is an amenable number.

188813028 is an abundant number, since it is smaller than the sum of its proper divisors (251750732).

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

188813028 is a wasteful number, since it uses less digits than its factorization.

188813028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15734426 (or 15734424 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 39.

The square root of 188813028 is about 13740.9252963547. The cubic root of 188813028 is about 573.6900518813.

The spelling of 188813028 in words is "one hundred eighty-eight million, eight hundred thirteen thousand, twenty-eight".