216371384 has 16 divisors (see below), whose sum is σ = 407278800. Its totient is φ = 107763712.

The previous prime is 216371381. The next prime is 216371423. The reversal of 216371384 is 483173612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216371381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50564 + ... + 54675.

It is an arithmetic number, because the mean of its divisors is an integer number (25454925).

Almost surely, 2^216371384 is an apocalyptic number.

It is an amenable number.

216371384 is a deficient number, since it is larger than the sum of its proper divisors (190907416).

216371384 is a wasteful number, since it uses less digits than its factorization.

216371384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105502 (or 105498 counting only the distinct ones).

The product of its digits is 24192, while the sum is 35.

The square root of 216371384 is about 14709.5677706723. The cubic root of 216371384 is about 600.3436771798.

The spelling of 216371384 in words is "two hundred sixteen million, three hundred seventy-one thousand, three hundred eighty-four".