216215248 has 40 divisors (see below), whose sum is σ = 445237128. Its totient is φ = 101363712.

The previous prime is 216215243. The next prime is 216215257. The reversal of 216215248 is 842512612.

216215248 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 180311184 + 35904064 = 13428^2 + 5992^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216215243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78340 + ... + 81052.

Almost surely, 2^216215248 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 216215248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222618564).

216215248 is an abundant number, since it is smaller than the sum of its proper divisors (229021880).

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

216215248 is a wasteful number, since it uses less digits than its factorization.

216215248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3031 (or 3025 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 216215248 is about 14704.2595189285. The cubic root of 216215248 is about 600.1992375371.

The spelling of 216215248 in words is "two hundred sixteen million, two hundred fifteen thousand, two hundred forty-eight".