215466216 has 64 divisors (see below), whose sum is σ = 624086400. Its totient is φ = 60715008.

The previous prime is 215466203. The next prime is 215466217. The reversal of 215466216 is 612664512.

215466216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (215466217) 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, 3480 + ... + 21048.

It is an arithmetic number, because the mean of its divisors is an integer number (9751350).

Almost surely, 2^215466216 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 215466216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312043200).

215466216 is an abundant number, since it is smaller than the sum of its proper divisors (408620184).

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

215466216 is a wasteful number, since it uses less digits than its factorization.

215466216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17658 (or 17654 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 215466216 is about 14678.7675231949. The cubic root of 215466216 is about 599.5053478664.

The spelling of 215466216 in words is "two hundred fifteen million, four hundred sixty-six thousand, two hundred sixteen".