19995996 has 24 divisors (see below), whose sum is σ = 46729984. Its totient is φ = 6654960.

The previous prime is 19995979. The next prime is 19996001. The reversal of 19995996 is 69959991.

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, 13341 + ... + 14763.

Almost surely, 2^19995996 is an apocalyptic number.

It is an amenable number.

19995996 is an abundant number, since it is smaller than the sum of its proper divisors (26733988).

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

19995996 is a wasteful number, since it uses less digits than its factorization.

19995996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2601 (or 2599 counting only the distinct ones).

The product of its digits is 1771470, while the sum is 57.

The square root of 19995996 is about 4471.6882717828. The cubic root of 19995996 is about 271.4236462370.

The spelling of 19995996 in words is "nineteen million, nine hundred ninety-five thousand, nine hundred ninety-six".