216302 has 12 divisors (see below), whose sum is σ = 337680. Its totient is φ = 103896.

The previous prime is 216289. The next prime is 216317. The reversal of 216302 is 203612.

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2699 + ... + 2777.

It is an arithmetic number, because the mean of its divisors is an integer number (28140).

2²¹⁶³⁰² is an apocalyptic number.

216302 is a deficient number, since it is larger than the sum of its proper divisors (121378).

216302 is an equidigital number, since it uses as much as digits as its factorization.

216302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 216302 is about 465.0827883291. The cubic root of 216302 is about 60.0279499410.

Adding to 216302 its reverse (203612), we get a palindrome (419914).

The spelling of 216302 in words is "two hundred sixteen thousand, three hundred two".