188224864 has 12 divisors (see below), whose sum is σ = 370567764. Its totient is φ = 94112416.

The previous prime is 188224859. The next prime is 188224903. The reversal of 188224864 is 468422881.

It is a self number, because there is not a number n which added to its sum of digits gives 188224864.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2940982 + ... + 2941045.

It is an arithmetic number, because the mean of its divisors is an integer number (30880647).

Almost surely, 2^188224864 is an apocalyptic number.

It is an amenable number.

188224864 is a deficient number, since it is larger than the sum of its proper divisors (182342900).

188224864 is an equidigital number, since it uses as much as digits as its factorization.

188224864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882037 (or 5882029 counting only the distinct ones).

The product of its digits is 196608, while the sum is 43.

The square root of 188224864 is about 13719.5066966710. The cubic root of 188224864 is about 573.0937392009.

The spelling of 188224864 in words is "one hundred eighty-eight million, two hundred twenty-four thousand, eight hundred sixty-four".