189880 has 32 divisors (see below), whose sum is σ = 440640. Its totient is φ = 73600.

The previous prime is 189877. The next prime is 189881. The reversal of 189880 is 88981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1830 + ... + 1930.

It is an arithmetic number, because the mean of its divisors is an integer number (13770).

2¹⁸⁹⁸⁸⁰ is an apocalyptic number.

189880 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 189880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220320).

189880 is an abundant number, since it is smaller than the sum of its proper divisors (250760).

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

189880 is a wasteful number, since it uses less digits than its factorization.

189880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 189880 is about 435.7522231728. The cubic root of 189880 is about 57.4768652993.

The spelling of 189880 in words is "one hundred eighty-nine thousand, eight hundred eighty".