216488224 has 12 divisors (see below), whose sum is σ = 426211254. Its totient is φ = 108244096.

The previous prime is 216488197. The next prime is 216488249. The reversal of 216488224 is 422884612.

It can be written as a sum of positive squares in only one way, i.e., 199939600 + 16548624 = 14140^2 + 4068^2 .

It is a super-2 number, since 2×216488224² = 93734302261348352, 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, 3382597 + ... + 3382660.

Almost surely, 2^216488224 is an apocalyptic number.

It is an amenable number.

216488224 is a deficient number, since it is larger than the sum of its proper divisors (209723030).

216488224 is an equidigital number, since it uses as much as digits as its factorization.

216488224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6765267 (or 6765259 counting only the distinct ones).

The product of its digits is 49152, while the sum is 37.

The square root of 216488224 is about 14713.5387993508. The cubic root of 216488224 is about 600.4517190904.

The spelling of 216488224 in words is "two hundred sixteen million, four hundred eighty-eight thousand, two hundred twenty-four".