216245214 has 48 divisors (see below), whose sum is σ = 496274688. Its totient is φ = 70540632.

The previous prime is 216245201. The next prime is 216245221. The reversal of 216245214 is 412542612.

216245214 is a `hidden beast` number, since 21 + 624 + 5 + 2 + 14 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18109 + ... + 27575.

It is an arithmetic number, because the mean of its divisors is an integer number (10339056).

Almost surely, 2^216245214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216245214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248137344).

216245214 is an abundant number, since it is smaller than the sum of its proper divisors (280029474).

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

216245214 is an equidigital number, since it uses as much as digits as its factorization.

216245214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9531 (or 9519 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 216245214 is about 14705.2784400704. The cubic root of 216245214 is about 600.2269641346.

Adding to 216245214 its reverse (412542612), we get a palindrome (628787826).

The spelling of 216245214 in words is "two hundred sixteen million, two hundred forty-five thousand, two hundred fourteen".