105216208 has 10 divisors (see below), whose sum is σ = 203856434. Its totient is φ = 52608096.

The previous prime is 105216193. The next prime is 105216233. The reversal of 105216208 is 802612501.

It can be written as a sum of positive squares in only one way, i.e., 103795344 + 1420864 = 10188^2 + 1192^2 .

It is a super-2 number, since 2×105216208² = 22140900851798528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3287991 + ... + 3288022.

Almost surely, 2^105216208 is an apocalyptic number.

It is an amenable number.

105216208 is a deficient number, since it is larger than the sum of its proper divisors (98640226).

105216208 is an equidigital number, since it uses as much as digits as its factorization.

105216208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6576021 (or 6576015 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 105216208 is about 10257.4952108202. The cubic root of 105216208 is about 472.0929865636.

Adding to 105216208 its reverse (802612501), we get a palindrome (907828709).

The spelling of 105216208 in words is "one hundred five million, two hundred sixteen thousand, two hundred eight".