188425872 has 40 divisors (see below), whose sum is σ = 540853280. Its totient is φ = 62808480.

The previous prime is 188425849. The next prime is 188425877. The reversal of 188425872 is 278524881.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (188425877) by changing a digit.

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, 217654 + ... + 218517.

It is an arithmetic number, because the mean of its divisors is an integer number (13521332).

Almost surely, 2^188425872 is an apocalyptic number.

188425872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

188425872 is an abundant number, since it is smaller than the sum of its proper divisors (352427408).

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

188425872 is a wasteful number, since it uses less digits than its factorization.

188425872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436188 (or 436176 counting only the distinct ones).

The product of its digits is 286720, while the sum is 45.

The square root of 188425872 is about 13726.8303697540. The cubic root of 188425872 is about 573.2976715995.

Subtracting 188425872 from its reverse (278524881), we obtain a palindrome (90099009).

The spelling of 188425872 in words is "one hundred eighty-eight million, four hundred twenty-five thousand, eight hundred seventy-two".