216610032 has 80 divisors (see below), whose sum is σ = 594704000. Its totient is φ = 67744512.

The previous prime is 216610003. The next prime is 216610103. The reversal of 216610032 is 230016612.

It is a happy number.

216610032 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 216609990 and 216610008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98319 + ... + 100497.

It is an arithmetic number, because the mean of its divisors is an integer number (7433800).

Almost surely, 2^216610032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216610032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297352000).

216610032 is an abundant number, since it is smaller than the sum of its proper divisors (378093968).

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

216610032 is a wasteful number, since it uses less digits than its factorization.

216610032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318 (or 2312 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 216610032 is about 14717.6775341764. The cubic root of 216610032 is about 600.5643135285.

Adding to 216610032 its reverse (230016612), we get a palindrome (446626644).

The spelling of 216610032 in words is "two hundred sixteen million, six hundred ten thousand, thirty-two".