19896444 has 36 divisors (see below), whose sum is σ = 51467416. Its totient is φ = 6477408.

The previous prime is 19896433. The next prime is 19896479. The reversal of 19896444 is 44469891.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 19896444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4879 + ... + 7974.

Almost surely, 2^19896444 is an apocalyptic number.

It is an amenable number.

19896444 is an abundant number, since it is smaller than the sum of its proper divisors (31570972).

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

19896444 is a wasteful number, since it uses less digits than its factorization.

19896444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12906 (or 12901 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 19896444 is about 4460.5430162706. The cubic root of 19896444 is about 270.9724603578.

The spelling of 19896444 in words is "nineteen million, eight hundred ninety-six thousand, four hundred forty-four".