216517232 has 10 divisors (see below), whose sum is σ = 419502168. Its totient is φ = 108258608.

The previous prime is 216517211. The next prime is 216517247. The reversal of 216517232 is 232715612.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 216517195 and 216517204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6766148 + ... + 6766179.

Almost surely, 2^216517232 is an apocalyptic number.

It is an amenable number.

216517232 is a deficient number, since it is larger than the sum of its proper divisors (202984936).

216517232 is a wasteful number, since it uses less digits than its factorization.

216517232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13532335 (or 13532329 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 216517232 is about 14714.5245251078. The cubic root of 216517232 is about 600.4785367547.

The spelling of 216517232 in words is "two hundred sixteen million, five hundred seventeen thousand, two hundred thirty-two".