19993392 has 50 divisors (see below), whose sum is σ = 57870428. Its totient is φ = 6664032.

The previous prime is 19993381. The next prime is 19993447. The reversal of 19993392 is 29339991.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 6418 + ... + 9009.

Almost surely, 2^19993392 is an apocalyptic number.

19993392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19993392 is an abundant number, since it is smaller than the sum of its proper divisors (37877036).

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

19993392 is a wasteful number, since it uses less digits than its factorization.

19993392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15447 (or 15432 counting only the distinct ones).

The product of its digits is 118098, while the sum is 45.

The square root of 19993392 is about 4471.3970971051. The cubic root of 19993392 is about 271.4118635805.

The spelling of 19993392 in words is "nineteen million, nine hundred ninety-three thousand, three hundred ninety-two".