189221252 has 18 divisors (see below), whose sum is σ = 363978174. Its totient is φ = 86009440.

The previous prime is 189221251. The next prime is 189221269. The reversal of 189221252 is 252122981.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 153412996 + 35808256 = 12386^2 + 5984^2 .

It is not an unprimeable number, because it can be changed into a prime (189221251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 194993 + ... + 195960.

Almost surely, 2^189221252 is an apocalyptic number.

It is an amenable number.

189221252 is a deficient number, since it is larger than the sum of its proper divisors (174756922).

189221252 is a wasteful number, since it uses less digits than its factorization.

189221252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390979 (or 390966 counting only the distinct ones).

The product of its digits is 5760, while the sum is 32.

The square root of 189221252 is about 13755.7715886823. The cubic root of 189221252 is about 574.1032039337.

The spelling of 189221252 in words is "one hundred eighty-nine million, two hundred twenty-one thousand, two hundred fifty-two".