188280 has 48 divisors (see below), whose sum is σ = 613080. Its totient is φ = 50112.

The previous prime is 188273. The next prime is 188281. The reversal of 188280 is 82881.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99 + ... + 621.

2¹⁸⁸²⁸⁰ is an apocalyptic number.

188280 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 188280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306540).

188280 is an abundant number, since it is smaller than the sum of its proper divisors (424800).

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

188280 is a wasteful number, since it uses less digits than its factorization.

188280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 188280 is about 433.9124335623. The cubic root of 188280 is about 57.3149691801.

The spelling of 188280 in words is "one hundred eighty-eight thousand, two hundred eighty".