19013928 has 16 divisors (see below), whose sum is σ = 47534880. Its totient is φ = 6337968.

The previous prime is 19013899. The next prime is 19013933. The reversal of 19013928 is 82931091.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396100 + ... + 396147.

It is an arithmetic number, because the mean of its divisors is an integer number (2970930).

Almost surely, 2^19013928 is an apocalyptic number.

It is an amenable number.

19013928 is an abundant number, since it is smaller than the sum of its proper divisors (28520952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19013928 is a wasteful number, since it uses less digits than its factorization.

19013928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792256 (or 792252 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 19013928 is about 4360.4963020280. The cubic root of 19013928 is about 266.9053515747.

The spelling of 19013928 in words is "nineteen million, thirteen thousand, nine hundred twenty-eight".