189303220 has 12 divisors (see below), whose sum is σ = 397536804. Its totient is φ = 75721280.

The previous prime is 189303209. The next prime is 189303229. The reversal of 189303220 is 22303981.

It can be written as a sum of positive squares in 2 ways, for example, as 132572196 + 56731024 = 11514^2 + 7532^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189303229) 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, 4732561 + ... + 4732600.

It is an arithmetic number, because the mean of its divisors is an integer number (33128067).

Almost surely, 2^189303220 is an apocalyptic number.

189303220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189303220 is an abundant number, since it is smaller than the sum of its proper divisors (208233584).

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

189303220 is a wasteful number, since it uses less digits than its factorization.

189303220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9465170 (or 9465168 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 189303220 is about 13758.7506700281. The cubic root of 189303220 is about 574.1860897928.

The spelling of 189303220 in words is "one hundred eighty-nine million, three hundred three thousand, two hundred twenty".