188380 has 12 divisors (see below), whose sum is σ = 395640. Its totient is φ = 75344.

The previous prime is 188369. The next prime is 188389. The reversal of 188380 is 83881.

188380 = T₂₇₂ + T₂₇₃ + ... + T₂₇₆.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188389) 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 3 ways as a sum of consecutive naturals, for example, 4690 + ... + 4729.

It is an arithmetic number, because the mean of its divisors is an integer number (32970).

2¹⁸⁸³⁸⁰ is an apocalyptic number.

188380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188380 is an abundant number, since it is smaller than the sum of its proper divisors (207260).

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

188380 is a wasteful number, since it uses less digits than its factorization.

188380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9428 (or 9426 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 188380 is about 434.0276488889. The cubic root of 188380 is about 57.3251145000.

The spelling of 188380 in words is "one hundred eighty-eight thousand, three hundred eighty".