216353344 has 28 divisors (see below), whose sum is σ = 430339500. Its totient is φ = 107921408.

The previous prime is 216353329. The next prime is 216353353. The reversal of 216353344 is 443353612.

It can be written as a sum of positive squares in 2 ways, for example, as 101606400 + 114746944 = 10080^2 + 10712^2 .

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 3 ways as a sum of consecutive naturals, for example, 24972 + ... + 32500.

Almost surely, 2^216353344 is an apocalyptic number.

It is an amenable number.

216353344 is a deficient number, since it is larger than the sum of its proper divisors (213986156).

216353344 is an equidigital number, since it uses as much as digits as its factorization.

216353344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7990 (or 7980 counting only the distinct ones).

The product of its digits is 25920, while the sum is 31.

The square root of 216353344 is about 14708.9545515648. The cubic root of 216353344 is about 600.3269921316.

The spelling of 216353344 in words is "two hundred sixteen million, three hundred fifty-three thousand, three hundred forty-four".