19728652 has 6 divisors (see below), whose sum is σ = 34525148. Its totient is φ = 9864324.

The previous prime is 19728629. The next prime is 19728697. The reversal of 19728652 is 25682791.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2466078 + ... + 2466085.

Almost surely, 2^19728652 is an apocalyptic number.

It is an amenable number.

19728652 is a deficient number, since it is larger than the sum of its proper divisors (14796496).

19728652 is a wasteful number, since it uses less digits than its factorization.

19728652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4932167 (or 4932165 counting only the distinct ones).

The product of its digits is 60480, while the sum is 40.

The square root of 19728652 is about 4441.6947216125. The cubic root of 19728652 is about 270.2085813942.

The spelling of 19728652 in words is "nineteen million, seven hundred twenty-eight thousand, six hundred fifty-two".