19995992 has 16 divisors (see below), whose sum is σ = 38702400. Its totient is φ = 9675360.

The previous prime is 19995979. The next prime is 19996001. The reversal of 19995992 is 29959991.

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, 40067 + ... + 40562.

It is an arithmetic number, because the mean of its divisors is an integer number (2418900).

Almost surely, 2^19995992 is an apocalyptic number.

It is an amenable number.

19995992 is a deficient number, since it is larger than the sum of its proper divisors (18706408).

19995992 is a wasteful number, since it uses less digits than its factorization.

19995992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80666 (or 80662 counting only the distinct ones).

The product of its digits is 590490, while the sum is 53.

The square root of 19995992 is about 4471.6878245244. The cubic root of 19995992 is about 271.4236281384.

The spelling of 19995992 in words is "nineteen million, nine hundred ninety-five thousand, nine hundred ninety-two".