216246286 has 4 divisors (see below), whose sum is σ = 324369432. Its totient is φ = 108123142.

The previous prime is 216246257. The next prime is 216246287. The reversal of 216246286 is 682642612.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216246287) 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 as a sum of consecutive naturals, namely, 54061570 + ... + 54061573.

It is an arithmetic number, because the mean of its divisors is an integer number (81092358).

Almost surely, 2^216246286 is an apocalyptic number.

216246286 is a deficient number, since it is larger than the sum of its proper divisors (108123146).

216246286 is a wasteful number, since it uses less digits than its factorization.

216246286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108123145.

The product of its digits is 55296, while the sum is 37.

The square root of 216246286 is about 14705.3148895221. The cubic root of 216246286 is about 600.2279559751.

Adding to 216246286 its reverse (682642612), we get a palindrome (898888898).

The spelling of 216246286 in words is "two hundred sixteen million, two hundred forty-six thousand, two hundred eighty-six".