19764968 has 8 divisors (see below), whose sum is σ = 37059330. Its totient is φ = 9882480.

The previous prime is 19764947. The next prime is 19764971. The reversal of 19764968 is 86946791.

It can be written as a sum of positive squares in only one way, i.e., 13118884 + 6646084 = 3622^2 + 2578^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1235303 + ... + 1235318.

Almost surely, 2^19764968 is an apocalyptic number.

It is an amenable number.

19764968 is a deficient number, since it is larger than the sum of its proper divisors (17294362).

19764968 is a wasteful number, since it uses less digits than its factorization.

19764968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2470627 (or 2470623 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The square root of 19764968 is about 4445.7809212781. The cubic root of 19764968 is about 270.3742774570.

The spelling of 19764968 in words is "nineteen million, seven hundred sixty-four thousand, nine hundred sixty-eight".