19906796 has 48 divisors (see below), whose sum is σ = 45412416. Its totient is φ = 7409664.

The previous prime is 19906793. The next prime is 19906811. The reversal of 19906796 is 69760991.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19906796.

It is not an unprimeable number, because it can be changed into a prime (19906793) 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 15 ways as a sum of consecutive naturals, for example, 4580 + ... + 7796.

It is an arithmetic number, because the mean of its divisors is an integer number (946092).

Almost surely, 2^19906796 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 19906796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22706208).

19906796 is an abundant number, since it is smaller than the sum of its proper divisors (25505620).

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

19906796 is a wasteful number, since it uses less digits than its factorization.

19906796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258 (or 3256 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 47.

The square root of 19906796 is about 4461.7032622083. The cubic root of 19906796 is about 271.0194473229.

It can be divided in two parts, 19906 and 796, that added together give a palindrome (20702).

The spelling of 19906796 in words is "nineteen million, nine hundred six thousand, seven hundred ninety-six".