199968120 has 96 divisors (see below), whose sum is σ = 708991920. Its totient is φ = 48476160.

The previous prime is 199968113. The next prime is 199968149. The reversal of 199968120 is 21869991.

199968120 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21289 + ... + 29208.

Almost surely, 2^199968120 is an apocalyptic number.

199968120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

199968120 is an abundant number, since it is smaller than the sum of its proper divisors (509023800).

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

199968120 is a wasteful number, since it uses less digits than its factorization.

199968120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50525 (or 50518 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 45.

The square root of 199968120 is about 14141.0084506021. The cubic root of 199968120 is about 584.7724734296.

The spelling of 199968120 in words is "one hundred ninety-nine million, nine hundred sixty-eight thousand, one hundred twenty".