19793168 has 40 divisors (see below), whose sum is σ = 41401368. Its totient is φ = 9132032.

The previous prime is 19793161. The next prime is 19793173. The reversal of 19793168 is 86139791.

It can be written as a sum of positive squares in 4 ways, for example, as 13897984 + 5895184 = 3728^2 + 2428^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19793161) 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, 13730 + ... + 15102.

Almost surely, 2^19793168 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 19793168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20700684).

19793168 is an abundant number, since it is smaller than the sum of its proper divisors (21608200).

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

19793168 is a wasteful number, since it uses less digits than its factorization.

19793168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1451 (or 1445 counting only the distinct ones).

The product of its digits is 81648, while the sum is 44.

The square root of 19793168 is about 4448.9513371131. The cubic root of 19793168 is about 270.5028033644.

The spelling of 19793168 in words is "nineteen million, seven hundred ninety-three thousand, one hundred sixty-eight".