19808196 has 48 divisors (see below), whose sum is σ = 49533120. Its totient is φ = 6138880.

The previous prime is 19808183. The next prime is 19808227. The reversal of 19808196 is 69180891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17611 + ... + 18701.

It is an arithmetic number, because the mean of its divisors is an integer number (1031940).

Almost surely, 2^19808196 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19808196, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24766560).

19808196 is an abundant number, since it is smaller than the sum of its proper divisors (29724924).

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

19808196 is a wasteful number, since it uses less digits than its factorization.

19808196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204 (or 1202 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 19808196 is about 4450.6399539841. The cubic root of 19808196 is about 270.5712459662.

The spelling of 19808196 in words is "nineteen million, eight hundred eight thousand, one hundred ninety-six".