19868768 has 24 divisors (see below), whose sum is σ = 40380480. Its totient is φ = 9613440.

The previous prime is 19868759. The next prime is 19868773. The reversal of 19868768 is 86786891.

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, 9023 + ... + 11006.

It is an arithmetic number, because the mean of its divisors is an integer number (1682520).

Almost surely, 2^19868768 is an apocalyptic number.

It is an amenable number.

19868768 is an abundant number, since it is smaller than the sum of its proper divisors (20511712).

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

19868768 is a wasteful number, since it uses less digits than its factorization.

19868768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20070 (or 20062 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 53.

The square root of 19868768 is about 4457.4396238199. The cubic root of 19868768 is about 270.8467609490.

The spelling of 19868768 in words is "nineteen million, eight hundred sixty-eight thousand, seven hundred sixty-eight".