189104 has 20 divisors (see below), whose sum is σ = 374976. Its totient is φ = 92352.

The previous prime is 189067. The next prime is 189127. The reversal of 189104 is 401981.

It is a Smith number, since the sum of its digits (23) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a self number, because there is not a number *n* which added to its sum of digits gives 189104.

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, 737 + ... + 959.

2^{189104} is an apocalyptic number.

It is an amenable number.

189104 is a deficient number, since it is larger than the sum of its proper divisors (185872).

189104 is a wasteful number, since it uses less digits than its factorization.

189104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 189104 is about 434.8608972994. The cubic root of 189104 is about 57.3984597352.

The spelling of 189104 in words is "one hundred eighty-nine thousand, one hundred four".

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