189304972 has 12 divisors (see below), whose sum is σ = 341970496. Its totient is φ = 91599120.

The previous prime is 189304943. The next prime is 189304991. The reversal of 189304972 is 279403981.

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, 763203 + ... + 763450.

Almost surely, 2^189304972 is an apocalyptic number.

It is an amenable number.

189304972 is a deficient number, since it is larger than the sum of its proper divisors (152665524).

189304972 is a wasteful number, since it uses less digits than its factorization.

189304972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526688 (or 1526686 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 189304972 is about 13758.8143384523. The cubic root of 189304972 is about 574.1878611501.

Subtracting 189304972 from its reverse (279403981), we obtain a palindrome (90099009).

The spelling of 189304972 in words is "one hundred eighty-nine million, three hundred four thousand, nine hundred seventy-two".