216342286 has 8 divisors (see below), whose sum is σ = 325571400. Its totient is φ = 107818488.

The previous prime is 216342277. The next prime is 216342319. The reversal of 216342286 is 682243612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175561 + ... + 176788.

It is an arithmetic number, because the mean of its divisors is an integer number (40696425).

Almost surely, 2^216342286 is an apocalyptic number.

216342286 is a deficient number, since it is larger than the sum of its proper divisors (109229114).

216342286 is a wasteful number, since it uses less digits than its factorization.

216342286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352658.

The product of its digits is 27648, while the sum is 34.

The square root of 216342286 is about 14708.5786532894. The cubic root of 216342286 is about 600.3167642194.

Adding to 216342286 its reverse (682243612), we get a palindrome (898585898).

The spelling of 216342286 in words is "two hundred sixteen million, three hundred forty-two thousand, two hundred eighty-six".