189372220 has 24 divisors (see below), whose sum is σ = 403132464. Its totient is φ = 74710656.

The previous prime is 189372203. The next prime is 189372229. The reversal of 189372220 is 22273981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189372229) 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, 63394 + ... + 66313.

It is an arithmetic number, because the mean of its divisors is an integer number (16797186).

Almost surely, 2^189372220 is an apocalyptic number.

189372220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189372220 is an abundant number, since it is smaller than the sum of its proper divisors (213760244).

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

189372220 is a wasteful number, since it uses less digits than its factorization.

189372220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129789 (or 129787 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 189372220 is about 13761.2579366859. The cubic root of 189372220 is about 574.2558438934.

The spelling of 189372220 in words is "one hundred eighty-nine million, three hundred seventy-two thousand, two hundred twenty".