216245508 has 48 divisors (see below), whose sum is σ = 535610880. Its totient is φ = 67669504.

The previous prime is 216245467. The next prime is 216245509. The reversal of 216245508 is 805542612.

It is not an unprimeable number, because it can be changed into a prime (216245509) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96610 + ... + 98822.

It is an arithmetic number, because the mean of its divisors is an integer number (11158560).

Almost surely, 2^216245508 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 216245508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267805440).

216245508 is an abundant number, since it is smaller than the sum of its proper divisors (319365372).

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

216245508 is a wasteful number, since it uses less digits than its factorization.

216245508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716 (or 2714 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 216245508 is about 14705.2884364775. The cubic root of 216245508 is about 600.2272361509.

The spelling of 216245508 in words is "two hundred sixteen million, two hundred forty-five thousand, five hundred eight".