19982216 has 32 divisors (see below), whose sum is σ = 39441600. Its totient is φ = 9472320.

The previous prime is 19982213. The next prime is 19982251. The reversal of 19982216 is 61228991.

It is a self number, because there is not a number n which added to its sum of digits gives 19982216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19982213) 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 7 ways as a sum of consecutive naturals, for example, 23690 + ... + 24518.

It is an arithmetic number, because the mean of its divisors is an integer number (1232550).

Almost surely, 2^19982216 is an apocalyptic number.

It is an amenable number.

19982216 is a deficient number, since it is larger than the sum of its proper divisors (19459384).

19982216 is a wasteful number, since it uses less digits than its factorization.

19982216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989 (or 985 counting only the distinct ones).

The product of its digits is 15552, while the sum is 38.

The square root of 19982216 is about 4470.1472011557. The cubic root of 19982216 is about 271.3612824626.

The spelling of 19982216 in words is "nineteen million, nine hundred eighty-two thousand, two hundred sixteen".