216612232 has 16 divisors (see below), whose sum is σ = 430039260. Its totient is φ = 101935104.

The previous prime is 216612203. The next prime is 216612251. The reversal of 216612232 is 232216612.

216612232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 215326276 + 1285956 = 14674^2 + 1134^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216612197 and 216612206.

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, 796233 + ... + 796504.

Almost surely, 2^216612232 is an apocalyptic number.

It is an amenable number.

216612232 is a deficient number, since it is larger than the sum of its proper divisors (213427028).

216612232 is a wasteful number, since it uses less digits than its factorization.

216612232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1592760 (or 1592756 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 216612232 is about 14717.7522740397. The cubic root of 216612232 is about 600.5663467322.

Adding to 216612232 its reverse (232216612), we get a palindrome (448828844).

The spelling of 216612232 in words is "two hundred sixteen million, six hundred twelve thousand, two hundred thirty-two".