19983768 has 48 divisors (see below), whose sum is σ = 58119480. Its totient is φ = 5709312.

The previous prime is 19983767. The next prime is 19983781. The reversal of 19983768 is 86738991.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 19983768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19983767) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7321 + ... + 9672.

Almost surely, 2^19983768 is an apocalyptic number.

It is an amenable number.

19983768 is an abundant number, since it is smaller than the sum of its proper divisors (38135712).

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

19983768 is a wasteful number, since it uses less digits than its factorization.

19983768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17016 (or 17005 counting only the distinct ones).

The product of its digits is 653184, while the sum is 51.

The square root of 19983768 is about 4470.3207938581. The cubic root of 19983768 is about 271.3683077396.

The spelling of 19983768 in words is "nineteen million, nine hundred eighty-three thousand, seven hundred sixty-eight".