19123928 has 16 divisors (see below), whose sum is σ = 35993760. Its totient is φ = 9525600.

The previous prime is 19123919. The next prime is 19123969. The reversal of 19123928 is 82932191.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 2243 + ... + 6578.

It is an arithmetic number, because the mean of its divisors is an integer number (2249610).

Almost surely, 2^19123928 is an apocalyptic number.

It is an amenable number.

19123928 is a deficient number, since it is larger than the sum of its proper divisors (16869832).

19123928 is a wasteful number, since it uses less digits than its factorization.

19123928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9098 (or 9094 counting only the distinct ones).

The product of its digits is 7776, while the sum is 35.

The square root of 19123928 is about 4373.0913550942. The cubic root of 19123928 is about 267.4190653918.

The spelling of 19123928 in words is "nineteen million, one hundred twenty-three thousand, nine hundred twenty-eight".