19328916 has 24 divisors (see below), whose sum is σ = 45196704. Its totient is φ = 6429280.

The previous prime is 19328879. The next prime is 19328951. The reversal of 19328916 is 61982391.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5326 + ... + 8186.

It is an arithmetic number, because the mean of its divisors is an integer number (1883196).

Almost surely, 2^19328916 is an apocalyptic number.

It is an amenable number.

19328916 is an abundant number, since it is smaller than the sum of its proper divisors (25867788).

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

19328916 is a wasteful number, since it uses less digits than its factorization.

19328916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3431 (or 3429 counting only the distinct ones).

The product of its digits is 23328, while the sum is 39.

The square root of 19328916 is about 4396.4663082981. The cubic root of 19328916 is about 268.3711535322.

The spelling of 19328916 in words is "nineteen million, three hundred twenty-eight thousand, nine hundred sixteen".