19868404 has 12 divisors (see below), whose sum is σ = 35509824. Its totient is φ = 9722744.

The previous prime is 19868399. The next prime is 19868423. The reversal of 19868404 is 40486891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52654 + ... + 53029.

It is an arithmetic number, because the mean of its divisors is an integer number (2959152).

Almost surely, 2^19868404 is an apocalyptic number.

It is an amenable number.

19868404 is a deficient number, since it is larger than the sum of its proper divisors (15641420).

19868404 is a wasteful number, since it uses less digits than its factorization.

19868404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105734 (or 105732 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 19868404 is about 4457.3987930182. The cubic root of 19868404 is about 270.8451069491.

The spelling of 19868404 in words is "nineteen million, eight hundred sixty-eight thousand, four hundred four".