19968028 has 6 divisors (see below), whose sum is σ = 34944056. Its totient is φ = 9984012.

The previous prime is 19968007. The next prime is 19968029. The reversal of 19968028 is 82086991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19968029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2496000 + ... + 2496007.

Almost surely, 2^19968028 is an apocalyptic number.

It is an amenable number.

19968028 is a deficient number, since it is larger than the sum of its proper divisors (14976028).

19968028 is a wasteful number, since it uses less digits than its factorization.

19968028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4992011 (or 4992009 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 19968028 is about 4468.5599470075. The cubic root of 19968028 is about 271.2970422492.

The spelling of 19968028 in words is "nineteen million, nine hundred sixty-eight thousand, twenty-eight".