19844808 has 16 divisors (see below), whose sum is σ = 49612080. Its totient is φ = 6614928.

The previous prime is 19844807. The next prime is 19844821. The reversal of 19844808 is 80844891.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 19844808.

It is not an unprimeable number, because it can be changed into a prime (19844807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413410 + ... + 413457.

It is an arithmetic number, because the mean of its divisors is an integer number (3100755).

Almost surely, 2^19844808 is an apocalyptic number.

It is an amenable number.

19844808 is an abundant number, since it is smaller than the sum of its proper divisors (29767272).

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

19844808 is a wasteful number, since it uses less digits than its factorization.

19844808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826876 (or 826872 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The square root of 19844808 is about 4454.7511715022. The cubic root of 19844808 is about 270.7378446383.

The spelling of 19844808 in words is "nineteen million, eight hundred forty-four thousand, eight hundred eight".