216320588 has 24 divisors (see below), whose sum is σ = 417073104. Its totient is φ = 97352000.

The previous prime is 216320581. The next prime is 216320593. The reversal of 216320588 is 885023612.

It is not an unprimeable number, because it can be changed into a prime (216320581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19895 + ... + 28782.

It is an arithmetic number, because the mean of its divisors is an integer number (17378046).

Almost surely, 2^216320588 is an apocalyptic number.

It is an amenable number.

216320588 is a deficient number, since it is larger than the sum of its proper divisors (200752516).

216320588 is a wasteful number, since it uses less digits than its factorization.

216320588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48793 (or 48791 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 216320588 is about 14707.8410380314. The cubic root of 216320588 is about 600.2966940043.

The spelling of 216320588 in words is "two hundred sixteen million, three hundred twenty thousand, five hundred eighty-eight".