19728064 has 28 divisors (see below), whose sum is σ = 39370000. Its totient is φ = 9808128.

The previous prime is 19728017. The next prime is 19728073. The reversal of 19728064 is 46082791.

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, 11962 + ... + 13510.

Almost surely, 2^19728064 is an apocalyptic number.

It is an amenable number.

19728064 is a deficient number, since it is larger than the sum of its proper divisors (19641936).

19728064 is a wasteful number, since it uses less digits than its factorization.

19728064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1760 (or 1750 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 19728064 is about 4441.6285301677. The cubic root of 19728064 is about 270.2058969022.

The spelling of 19728064 in words is "nineteen million, seven hundred twenty-eight thousand, sixty-four".