188328840 has 64 divisors (see below), whose sum is σ = 645701760. Its totient is φ = 43046400.

The previous prime is 188328823. The next prime is 188328883. The reversal of 188328840 is 48823881.

188328840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 188328792 and 188328801.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111261 + ... + 112940.

It is an arithmetic number, because the mean of its divisors is an integer number (10089090).

Almost surely, 2^188328840 is an apocalyptic number.

188328840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188328840 is an abundant number, since it is smaller than the sum of its proper divisors (457372920).

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

188328840 is a wasteful number, since it uses less digits than its factorization.

188328840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224222 (or 224218 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 42.

The square root of 188328840 is about 13723.2955225777. The cubic root of 188328840 is about 573.1992460302.

It can be divided in two parts, 18832 and 8840, that added together give a palindrome (27672).

The spelling of 188328840 in words is "one hundred eighty-eight million, three hundred twenty-eight thousand, eight hundred forty".