188428032 has 216 divisors, whose sum is σ = 609349104. Its totient is φ = 57729024.

The previous prime is 188428027. The next prime is 188428043. The reversal of 188428032 is 230824881.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (216).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent 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 23 ways as a sum of consecutive naturals, for example, 808588 + ... + 808820.

Almost surely, 2^188428032 is an apocalyptic number.

188428032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188428032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304674552).

188428032 is an abundant number, since it is smaller than the sum of its proper divisors (420921072).

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

188428032 is an equidigital number, since it uses as much as digits as its factorization.

188428032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 188428032 is about 13726.9090475606. The cubic root of 188428032 is about 573.2998622369.

The spelling of 188428032 in words is "one hundred eighty-eight million, four hundred twenty-eight thousand, thirty-two".