19782068 has 12 divisors (see below), whose sum is σ = 34730052. Its totient is φ = 9859200.

The previous prime is 19782043. The next prime is 19782079. The reversal of 19782068 is 86028791.

It can be written as a sum of positive squares in 2 ways, for example, as 9872164 + 9909904 = 3142^2 + 3148^2 .

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, 6533 + ... + 9068.

It is an arithmetic number, because the mean of its divisors is an integer number (2894171).

Almost surely, 2^19782068 is an apocalyptic number.

It is an amenable number.

19782068 is a deficient number, since it is larger than the sum of its proper divisors (14947984).

19782068 is a wasteful number, since it uses less digits than its factorization.

19782068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15922 (or 15920 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 19782068 is about 4447.7036771799. The cubic root of 19782068 is about 270.4522279575.

The spelling of 19782068 in words is "nineteen million, seven hundred eighty-two thousand, sixty-eight".