216423322 has 8 divisors (see below), whose sum is σ = 324735156. Its totient is φ = 108178272.

The previous prime is 216423313. The next prime is 216423349. The reversal of 216423322 is 223324612.

It can be written as a sum of positive squares in 2 ways, for example, as 216413521 + 9801 = 14711^2 + 99^2 .

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, 7603 + ... + 22150.

Almost surely, 2^216423322 is an apocalyptic number.

216423322 is a deficient number, since it is larger than the sum of its proper divisors (108311834).

216423322 is a wasteful number, since it uses less digits than its factorization.

216423322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33392.

The product of its digits is 3456, while the sum is 25.

The square root of 216423322 is about 14711.3331143034. Note that the first 3 decimals coincide. The cubic root of 216423322 is about 600.3917090326.

Adding to 216423322 its reverse (223324612), we get a palindrome (439747934).

It can be divided in two parts, 21642 and 3322, that added together give a square (24964 = 158²).

The spelling of 216423322 in words is "two hundred sixteen million, four hundred twenty-three thousand, three hundred twenty-two".