19984974 has 16 divisors (see below), whose sum is σ = 40286208. Its totient is φ = 6608952.

The previous prime is 19984969. The next prime is 19985023. The reversal of 19984974 is 47948991.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12352 + ... + 13875.

It is an arithmetic number, because the mean of its divisors is an integer number (2517888).

Almost surely, 2^19984974 is an apocalyptic number.

19984974 is an abundant number, since it is smaller than the sum of its proper divisors (20301234).

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

19984974 is a wasteful number, since it uses less digits than its factorization.

19984974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26359.

The product of its digits is 653184, while the sum is 51.

The square root of 19984974 is about 4470.4556814714. The cubic root of 19984974 is about 271.3737665632.

The spelling of 19984974 in words is "nineteen million, nine hundred eighty-four thousand, nine hundred seventy-four".