216226256 has 20 divisors (see below), whose sum is σ = 421452192. Its totient is φ = 107464416.

The previous prime is 216226249. The next prime is 216226279. The reversal of 216226256 is 652622612.

216226256 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 3 ways as a sum of consecutive naturals, for example, 37790 + ... + 43133.

Almost surely, 2^216226256 is an apocalyptic number.

It is an amenable number.

216226256 is a deficient number, since it is larger than the sum of its proper divisors (205225936).

216226256 is a wasteful number, since it uses less digits than its factorization.

216226256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81098 (or 81092 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 216226256 is about 14704.6338274708. The cubic root of 216226256 is about 600.2094231910.

Adding to 216226256 its reverse (652622612), we get a palindrome (868848868).

The spelling of 216226256 in words is "two hundred sixteen million, two hundred twenty-six thousand, two hundred fifty-six".