19119728 has 20 divisors (see below), whose sum is σ = 37315320. Its totient is φ = 9489984.

The previous prime is 19119707. The next prime is 19119733. The reversal of 19119728 is 82791191.

It is a junction number, because it is equal to n+sod(n) for n = 19119691 and 19119700.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 2075 + ... + 6522.

It is an arithmetic number, because the mean of its divisors is an integer number (1865766).

Almost surely, 2^19119728 is an apocalyptic number.

It is an amenable number.

19119728 is a deficient number, since it is larger than the sum of its proper divisors (18195592).

19119728 is a wasteful number, since it uses less digits than its factorization.

19119728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8744 (or 8738 counting only the distinct ones).

The product of its digits is 9072, while the sum is 38.

The square root of 19119728 is about 4372.6111192284. The cubic root of 19119728 is about 267.3994870864.

The spelling of 19119728 in words is "nineteen million, one hundred nineteen thousand, seven hundred twenty-eight".