188402228 has 24 divisors (see below), whose sum is σ = 398970432. Its totient is φ = 75993984.

The previous prime is 188402213. The next prime is 188402243. The reversal of 188402228 is 822204881.

188402228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (188402213) and next prime (188402243).

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, 197426 + ... + 198377.

It is an arithmetic number, because the mean of its divisors is an integer number (16623768).

Almost surely, 2^188402228 is an apocalyptic number.

It is an amenable number.

188402228 is an abundant number, since it is smaller than the sum of its proper divisors (210568204).

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

188402228 is a wasteful number, since it uses less digits than its factorization.

188402228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395831 (or 395829 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 35.

The square root of 188402228 is about 13725.9691096840. The cubic root of 188402228 is about 573.2736911397.

The spelling of 188402228 in words is "one hundred eighty-eight million, four hundred two thousand, two hundred twenty-eight".