216506232 has 48 divisors (see below), whose sum is σ = 605292480. Its totient is φ = 69840000.

The previous prime is 216506209. The next prime is 216506233. The reversal of 216506232 is 232605612.

216506232 is a `hidden beast` number, since 2 + 1 + 650 + 6 + 2 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 216506196 and 216506205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216506233) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46269 + ... + 50732.

It is an arithmetic number, because the mean of its divisors is an integer number (12610260).

Almost surely, 2^216506232 is an apocalyptic number.

It is an amenable number.

216506232 is an abundant number, since it is smaller than the sum of its proper divisors (388786248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216506232 is a wasteful number, since it uses less digits than its factorization.

216506232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97044 (or 97037 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 216506232 is about 14714.1507400189. The cubic root of 216506232 is about 600.4683676245.

The spelling of 216506232 in words is "two hundred sixteen million, five hundred six thousand, two hundred thirty-two".