19984716 has 54 divisors (see below), whose sum is σ = 51908220. Its totient is φ = 6481152.

The previous prime is 19984697. The next prime is 19984717. The reversal of 19984716 is 61748991.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (19984717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 205980 + ... + 206076.

Almost surely, 2^19984716 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 19984716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25954110).

19984716 is an abundant number, since it is smaller than the sum of its proper divisors (31923504).

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

19984716 is a wasteful number, since it uses less digits than its factorization.

19984716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 161 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 19984716 is about 4470.4268252595. The cubic root of 19984716 is about 271.3725987737.

The spelling of 19984716 in words is "nineteen million, nine hundred eighty-four thousand, seven hundred sixteen".