216044334 has 80 divisors (see below), whose sum is σ = 541172016. Its totient is φ = 63849600.

The previous prime is 216044333. The next prime is 216044351. The reversal of 216044334 is 433440612.

216044334 is a `hidden beast` number, since 21 + 604 + 4 + 3 + 34 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 216044298 and 216044307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216044333) 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 39 ways as a sum of consecutive naturals, for example, 71584 + ... + 74540.

Almost surely, 2^216044334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216044334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270586008).

216044334 is an abundant number, since it is smaller than the sum of its proper divisors (325127682).

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

216044334 is a wasteful number, since it uses less digits than its factorization.

216044334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3023 (or 3014 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

The square root of 216044334 is about 14698.4466526229. The cubic root of 216044334 is about 600.0410471918.

Adding to 216044334 its reverse (433440612), we get a palindrome (649484946).

The spelling of 216044334 in words is "two hundred sixteen million, forty-four thousand, three hundred thirty-four".