189220 has 12 divisors (see below), whose sum is σ = 397404. Its totient is φ = 75680.

The previous prime is 189199. The next prime is 189223. The reversal of 189220 is 22981.

It can be written as a sum of positive squares in 2 ways, for example, as 106276 + 82944 = 326^2 + 288^2 .

It is a junction number, because it is equal to n+sod(n) for n = 189191 and 189200.

It is not an unprimeable number, because it can be changed into a prime (189223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4711 + ... + 4750.

It is an arithmetic number, because the mean of its divisors is an integer number (33117).

2¹⁸⁹²²⁰ is an apocalyptic number.

189220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189220 is an abundant number, since it is smaller than the sum of its proper divisors (208184).

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

189220 is a wasteful number, since it uses less digits than its factorization.

189220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9470 (or 9468 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 189220 is about 434.9942528356. The cubic root of 189220 is about 57.4101937729.

The spelling of 189220 in words is "one hundred eighty-nine thousand, two hundred twenty".