19216984 has 16 divisors (see below), whose sum is σ = 36799200. Its totient is φ = 9403872.

The previous prime is 19216979. The next prime is 19217017. The reversal of 19216984 is 48961291.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 25179 + ... + 25930.

It is an arithmetic number, because the mean of its divisors is an integer number (2299950).

Almost surely, 2^19216984 is an apocalyptic number.

It is an amenable number.

19216984 is a deficient number, since it is larger than the sum of its proper divisors (17582216).

19216984 is a wasteful number, since it uses less digits than its factorization.

19216984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51162 (or 51158 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 19216984 is about 4383.7180566273. The cubic root of 19216984 is about 267.8521126607.

The spelling of 19216984 in words is "nineteen million, two hundred sixteen thousand, nine hundred eighty-four".