19920804 has 24 divisors (see below), whose sum is σ = 49216608. Its totient is φ = 6249600.

The previous prime is 19920799. The next prime is 19920827. The reversal of 19920804 is 40802991.

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, 48622 + ... + 49029.

It is an arithmetic number, because the mean of its divisors is an integer number (2050692).

Almost surely, 2^19920804 is an apocalyptic number.

It is an amenable number.

19920804 is an abundant number, since it is smaller than the sum of its proper divisors (29295804).

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

19920804 is a wasteful number, since it uses less digits than its factorization.

19920804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97675 (or 97673 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 19920804 is about 4463.2727902292. The cubic root of 19920804 is about 271.0830026748.

The spelling of 19920804 in words is "nineteen million, nine hundred twenty thousand, eight hundred four".