189984028 has 24 divisors (see below), whose sum is σ = 362078640. Its totient is φ = 86697600.

The previous prime is 189983971. The next prime is 189984031. The reversal of 189984028 is 820489981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15898 + ... + 25153.

It is an arithmetic number, because the mean of its divisors is an integer number (15086610).

Almost surely, 2^189984028 is an apocalyptic number.

It is an amenable number.

189984028 is a deficient number, since it is larger than the sum of its proper divisors (172094612).

189984028 is a wasteful number, since it uses less digits than its factorization.

189984028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41157 (or 41155 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 49.

The square root of 189984028 is about 13783.4693745806. The cubic root of 189984028 is about 574.8735984283.

The spelling of 189984028 in words is "one hundred eighty-nine million, nine hundred eighty-four thousand, twenty-eight".