20199992 has 16 divisors (see below), whose sum is σ = 37978200. Its totient is φ = 10072480.

The previous prime is 20199973. The next prime is 20200013. The reversal of 20199992 is 29999102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134 + ... + 6357.

Almost surely, 2^20199992 is an apocalyptic number.

It is an amenable number.

20199992 is a deficient number, since it is larger than the sum of its proper divisors (17778208).

20199992 is a wasteful number, since it uses less digits than its factorization.

20199992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6886 (or 6882 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 20199992 is about 4494.4401208604. The cubic root of 20199992 is about 272.3435322039.

The spelling of 20199992 in words is "twenty million, one hundred ninety-nine thousand, nine hundred ninety-two".