189336872 has 8 divisors (see below), whose sum is σ = 355006650. Its totient is φ = 94668432.

The previous prime is 189336859. The next prime is 189336883. The reversal of 189336872 is 278633981.

189336872 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 128278276 + 61058596 = 11326^2 + 7814^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11833547 + ... + 11833562.

Almost surely, 2^189336872 is an apocalyptic number.

It is an amenable number.

189336872 is a deficient number, since it is larger than the sum of its proper divisors (165669778).

189336872 is a wasteful number, since it uses less digits than its factorization.

189336872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23667115 (or 23667111 counting only the distinct ones).

The product of its digits is 435456, while the sum is 47.

The square root of 189336872 is about 13759.9735464862. The cubic root of 189336872 is about 574.2201116924.

The spelling of 189336872 in words is "one hundred eighty-nine million, three hundred thirty-six thousand, eight hundred seventy-two".