19816028 has 12 divisors (see below), whose sum is σ = 35068320. Its totient is φ = 9796512.

The previous prime is 19816007. The next prime is 19816051. The reversal of 19816028 is 82061891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27476 + ... + 28187.

It is an arithmetic number, because the mean of its divisors is an integer number (2922360).

Almost surely, 2^19816028 is an apocalyptic number.

It is an amenable number.

19816028 is a deficient number, since it is larger than the sum of its proper divisors (15252292).

19816028 is a wasteful number, since it uses less digits than its factorization.

19816028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55756 (or 55754 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 19816028 is about 4451.5197404931. The cubic root of 19816028 is about 270.6069018258.

The spelling of 19816028 in words is "nineteen million, eight hundred sixteen thousand, twenty-eight".