189800112 has 40 divisors (see below), whose sum is σ = 491290480. Its totient is φ = 63141120.

The previous prime is 189800089. The next prime is 189800129. The reversal of 189800112 is 211008981.

It is a self number, because there is not a number n which added to its sum of digits gives 189800112.

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, 22314 + ... + 29622.

It is an arithmetic number, because the mean of its divisors is an integer number (12282262).

Almost surely, 2^189800112 is an apocalyptic number.

189800112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189800112 is an abundant number, since it is smaller than the sum of its proper divisors (301490368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189800112 is a wasteful number, since it uses less digits than its factorization.

189800112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7861 (or 7855 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 30.

The square root of 189800112 is about 13776.7961442420. The cubic root of 189800112 is about 574.6880344288.

The spelling of 189800112 in words is "one hundred eighty-nine million, eight hundred thousand, one hundred twelve".