216241616 has 40 divisors (see below), whose sum is σ = 444209664. Its totient is φ = 101796480.

The previous prime is 216241591. The next prime is 216241621. The reversal of 216241616 is 616142612.

216241616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12461 + ... + 24243.

Almost surely, 2^216241616 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 216241616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222104832).

216241616 is an abundant number, since it is smaller than the sum of its proper divisors (227968048).

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

216241616 is a wasteful number, since it uses less digits than its factorization.

216241616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11859 (or 11853 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 216241616 is about 14705.1561025376. The cubic root of 216241616 is about 600.2236351537.

The spelling of 216241616 in words is "two hundred sixteen million, two hundred forty-one thousand, six hundred sixteen".