19449804 has 24 divisors (see below), whose sum is σ = 49508928. Its totient is φ = 5893840.

The previous prime is 19449797. The next prime is 19449809. The reversal of 19449804 is 40894491.

It is not an unprimeable number, because it can be changed into a prime (19449809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73542 + ... + 73805.

It is an arithmetic number, because the mean of its divisors is an integer number (2062872).

Almost surely, 2^19449804 is an apocalyptic number.

It is an amenable number.

19449804 is an abundant number, since it is smaller than the sum of its proper divisors (30059124).

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

19449804 is a wasteful number, since it uses less digits than its factorization.

19449804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147365 (or 147363 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 19449804 is about 4410.1931930472. The cubic root of 19449804 is about 268.9294785263.

The spelling of 19449804 in words is "nineteen million, four hundred forty-nine thousand, eight hundred four".