216319364 has 24 divisors (see below), whose sum is σ = 394587648. Its totient is φ = 103648320.

The previous prime is 216319357. The next prime is 216319421. The reversal of 216319364 is 463913612.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4304 + ... + 21240.

It is an arithmetic number, because the mean of its divisors is an integer number (16441152).

Almost surely, 2^216319364 is an apocalyptic number.

It is an amenable number.

216319364 is a deficient number, since it is larger than the sum of its proper divisors (178268284).

216319364 is a wasteful number, since it uses less digits than its factorization.

216319364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17075 (or 17073 counting only the distinct ones).

The product of its digits is 23328, while the sum is 35.

The square root of 216319364 is about 14707.7994275146. The cubic root of 216319364 is about 600.2955617889.

The spelling of 216319364 in words is "two hundred sixteen million, three hundred nineteen thousand, three hundred sixty-four".