216422234 has 8 divisors (see below), whose sum is σ = 371009568. Its totient is φ = 92752380.

The previous prime is 216422201. The next prime is 216422329. The reversal of 216422234 is 432224612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 7729352 + ... + 7729379.

It is an arithmetic number, because the mean of its divisors is an integer number (46376196).

Almost surely, 2^216422234 is an apocalyptic number.

216422234 is a deficient number, since it is larger than the sum of its proper divisors (154587334).

216422234 is a wasteful number, since it uses less digits than its factorization.

216422234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15458740.

The product of its digits is 4608, while the sum is 26.

The square root of 216422234 is about 14711.2961359630. The cubic root of 216422234 is about 600.3907029375.

Adding to 216422234 its reverse (432224612), we get a palindrome (648646846).

The spelling of 216422234 in words is "two hundred sixteen million, four hundred twenty-two thousand, two hundred thirty-four".