216033384 has 32 divisors (see below), whose sum is σ = 617238720. Its totient is φ = 61723776.

The previous prime is 216033379. The next prime is 216033421. The reversal of 216033384 is 483330612.

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 7 ways as a sum of consecutive naturals, for example, 642789 + ... + 643124.

It is an arithmetic number, because the mean of its divisors is an integer number (19288710).

Almost surely, 2^216033384 is an apocalyptic number.

216033384 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

216033384 is an abundant number, since it is smaller than the sum of its proper divisors (401205336).

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

216033384 is a wasteful number, since it uses less digits than its factorization.

216033384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285929 (or 1285925 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 216033384 is about 14698.0741595625. The cubic root of 216033384 is about 600.0309095188.

Adding to 216033384 its reverse (483330612), we get a palindrome (699363996).

The spelling of 216033384 in words is "two hundred sixteen million, thirty-three thousand, three hundred eighty-four".