19930804 has 12 divisors (see below), whose sum is σ = 34971300. Its totient is φ = 9939008.

The previous prime is 19930787. The next prime is 19930843. The reversal of 19930804 is 40803991.

It can be written as a sum of positive squares in 2 ways, for example, as 5475600 + 14455204 = 2340^2 + 3802^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19930804.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4849 + ... + 7960.

It is an arithmetic number, because the mean of its divisors is an integer number (2914275).

Almost surely, 2^19930804 is an apocalyptic number.

It is an amenable number.

19930804 is a deficient number, since it is larger than the sum of its proper divisors (15040496).

19930804 is a wasteful number, since it uses less digits than its factorization.

19930804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13202 (or 13200 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 19930804 is about 4464.3929038560. The cubic root of 19930804 is about 271.1283552042.

The spelling of 19930804 in words is "nineteen million, nine hundred thirty thousand, eight hundred four".