19924404 has 12 divisors (see below), whose sum is σ = 46490304. Its totient is φ = 6641464.

The previous prime is 19924397. The next prime is 19924433. The reversal of 19924404 is 40442991.

It is a tau number, because it is divible by the number of its divisors (12).

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, 830172 + ... + 830195.

It is an arithmetic number, because the mean of its divisors is an integer number (3874192).

Almost surely, 2^19924404 is an apocalyptic number.

It is an amenable number.

19924404 is an abundant number, since it is smaller than the sum of its proper divisors (26565900).

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

19924404 is a wasteful number, since it uses less digits than its factorization.

19924404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660374 (or 1660372 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 19924404 is about 4463.6760635154. The cubic root of 19924404 is about 271.0993313335.

The spelling of 19924404 in words is "nineteen million, nine hundred twenty-four thousand, four hundred four".