19984372 has 12 divisors (see below), whose sum is σ = 35126980. Its totient is φ = 9948096.

The previous prime is 19984361. The next prime is 19984381. The reversal of 19984372 is 27348991.

It can be written as a sum of positive squares in 2 ways, for example, as 16434916 + 3549456 = 4054^2 + 1884^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9993 + ... + 11824.

Almost surely, 2^19984372 is an apocalyptic number.

It is an amenable number.

19984372 is a deficient number, since it is larger than the sum of its proper divisors (15142608).

19984372 is a wasteful number, since it uses less digits than its factorization.

19984372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22050 (or 22048 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 19984372 is about 4470.3883500206. The cubic root of 19984372 is about 271.3710417052.

The spelling of 19984372 in words is "nineteen million, nine hundred eighty-four thousand, three hundred seventy-two".