188768340 has 96 divisors (see below), whose sum is σ = 621855360. Its totient is φ = 47374848.

The previous prime is 188768297. The next prime is 188768381. The reversal of 188768340 is 43867881.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1102 + ... + 19461.

It is an arithmetic number, because the mean of its divisors is an integer number (6477660).

Almost surely, 2^188768340 is an apocalyptic number.

188768340 is a gapful number since it is divisible by the number (10) 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 188768340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310927680).

188768340 is an abundant number, since it is smaller than the sum of its proper divisors (433087020).

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

188768340 is a wasteful number, since it uses less digits than its factorization.

188768340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20598 (or 20590 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 188768340 is about 13739.2991087610. The cubic root of 188768340 is about 573.6447882606.

The spelling of 188768340 in words is "one hundred eighty-eight million, seven hundred sixty-eight thousand, three hundred forty".