189923252 has 12 divisors (see below), whose sum is σ = 351916740. Its totient is φ = 89375616.

The previous prime is 189923249. The next prime is 189923299. The reversal of 189923252 is 252329981.

It can be written as a sum of positive squares in 2 ways, for example, as 53640976 + 136282276 = 7324^2 + 11674^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1396427 + ... + 1396562.

It is an arithmetic number, because the mean of its divisors is an integer number (29326395).

Almost surely, 2^189923252 is an apocalyptic number.

It is an amenable number.

189923252 is a deficient number, since it is larger than the sum of its proper divisors (161993488).

189923252 is a wasteful number, since it uses less digits than its factorization.

189923252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793010 (or 2793008 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 189923252 is about 13781.2645283370. The cubic root of 189923252 is about 574.8122910920.

The spelling of 189923252 in words is "one hundred eighty-nine million, nine hundred twenty-three thousand, two hundred fifty-two".