189000872 has 8 divisors (see below), whose sum is σ = 354376650. Its totient is φ = 94500432.

The previous prime is 189000871. The next prime is 189000887. The reversal of 189000872 is 278000981.

It is a happy number.

189000872 is digitally balanced in base 2, 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., 171976996 + 17023876 = 13114^2 + 4126^2 .

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

It is not an unprimeable number, because it can be changed into a prime (189000871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11812547 + ... + 11812562.

Almost surely, 2^189000872 is an apocalyptic number.

It is an amenable number.

189000872 is a deficient number, since it is larger than the sum of its proper divisors (165375778).

189000872 is a wasteful number, since it uses less digits than its factorization.

189000872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23625115 (or 23625111 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 189000872 is about 13747.7587991643. The cubic root of 189000872 is about 573.8802374102.

The spelling of 189000872 in words is "one hundred eighty-nine million, eight hundred seventy-two", and thus it is an aban number.