188340320 has 72 divisors (see below), whose sum is σ = 517621104. Its totient is φ = 64571136.

The previous prime is 188340277. The next prime is 188340329. The reversal of 188340320 is 23043881.

It is a happy number.

It is a super-2 number, since 2×188340320² = 70944152275404800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188340329) 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 11 ways as a sum of consecutive naturals, for example, 4172 + ... + 19851.

It is an arithmetic number, because the mean of its divisors is an integer number (7189182).

Almost surely, 2^188340320 is an apocalyptic number.

188340320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188340320 is an abundant number, since it is smaller than the sum of its proper divisors (329280784).

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

188340320 is a wasteful number, since it uses less digits than its factorization.

188340320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24052 (or 24037 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 188340320 is about 13723.7137830836. The cubic root of 188340320 is about 573.2108926685.

The spelling of 188340320 in words is "one hundred eighty-eight million, three hundred forty thousand, three hundred twenty".