19397804 has 12 divisors (see below), whose sum is σ = 33977328. Its totient is φ = 9690000.

The previous prime is 19397783. The next prime is 19397813. The reversal of 19397804 is 40879391.

It is a happy 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, 6329 + ... + 8879.

It is an arithmetic number, because the mean of its divisors is an integer number (2831444).

Almost surely, 2^19397804 is an apocalyptic number.

It is an amenable number.

19397804 is a deficient number, since it is larger than the sum of its proper divisors (14579524).

19397804 is a wasteful number, since it uses less digits than its factorization.

19397804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4456 (or 4454 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 19397804 is about 4404.2938139956. The cubic root of 19397804 is about 268.6895992619.

The spelling of 19397804 in words is "nineteen million, three hundred ninety-seven thousand, eight hundred four".