216256232 has 8 divisors (see below), whose sum is σ = 405480450. Its totient is φ = 108128112.

The previous prime is 216256223. The next prime is 216256247. The reversal of 216256232 is 232652612.

It can be written as a sum of positive squares in only one way, i.e., 210076036 + 6180196 = 14494^2 + 2486^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 216256195 and 216256204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13516007 + ... + 13516022.

Almost surely, 2^216256232 is an apocalyptic number.

It is an amenable number.

216256232 is a deficient number, since it is larger than the sum of its proper divisors (189224218).

216256232 is a wasteful number, since it uses less digits than its factorization.

216256232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27032035 (or 27032031 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 216256232 is about 14705.6530626831. The cubic root of 216256232 is about 600.2371580996.

The spelling of 216256232 in words is "two hundred sixteen million, two hundred fifty-six thousand, two hundred thirty-two".