216359368 has 8 divisors (see below), whose sum is σ = 405673830. Its totient is φ = 108179680.

The previous prime is 216359333. The next prime is 216359383. The reversal of 216359368 is 863953612.

It can be written as a sum of positive squares in only one way, i.e., 127283524 + 89075844 = 11282^2 + 9438^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×216359368² = 93622752242718848, which contains 22 as substring.

It is an unprimeable number.

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, 13522453 + ... + 13522468.

Almost surely, 2^216359368 is an apocalyptic number.

It is an amenable number.

216359368 is a deficient number, since it is larger than the sum of its proper divisors (189314462).

216359368 is a wasteful number, since it uses less digits than its factorization.

216359368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27044927 (or 27044923 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The square root of 216359368 is about 14709.1593233604. The cubic root of 216359368 is about 600.3325637830.

The spelling of 216359368 in words is "two hundred sixteen million, three hundred fifty-nine thousand, three hundred sixty-eight".