19993368 has 16 divisors (see below), whose sum is σ = 49983480. Its totient is φ = 6664448.

The previous prime is 19993361. The next prime is 19993373. The reversal of 19993368 is 86339991.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19993361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416505 + ... + 416552.

Almost surely, 2^19993368 is an apocalyptic number.

It is an amenable number.

19993368 is an abundant number, since it is smaller than the sum of its proper divisors (29990112).

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

19993368 is a wasteful number, since it uses less digits than its factorization.

19993368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833066 (or 833062 counting only the distinct ones).

The product of its digits is 314928, while the sum is 48.

The square root of 19993368 is about 4471.3944133793. The cubic root of 19993368 is about 271.4117549798.

The spelling of 19993368 in words is "nineteen million, nine hundred ninety-three thousand, three hundred sixty-eight".