19798996 has 48 divisors (see below), whose sum is σ = 42134400. Its totient is φ = 7959168.

The previous prime is 19798991. The next prime is 19799027. The reversal of 19798996 is 69989791.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a self number, because there is not a number n which added to its sum of digits gives 19798996.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19798991) 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, 29715 + ... + 30373.

It is an arithmetic number, because the mean of its divisors is an integer number (877800).

Almost surely, 2^19798996 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 19798996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21067200).

19798996 is an abundant number, since it is smaller than the sum of its proper divisors (22335404).

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

19798996 is a wasteful number, since it uses less digits than its factorization.

19798996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736 (or 734 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 58.

The square root of 19798996 is about 4449.6062747169. The cubic root of 19798996 is about 270.5293501613.

The spelling of 19798996 in words is "nineteen million, seven hundred ninety-eight thousand, nine hundred ninety-six".