12270208 has 32 divisors (see below), whose sum is σ = 24605460. Its totient is φ = 6094848.

The previous prime is 12270197. The next prime is 12270217. The reversal of 12270208 is 80207221.

It can be written as a sum of positive squares in 2 ways, for example, as 10810944 + 1459264 = 3288^2 + 1208^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 32710 + ... + 33082.

Almost surely, 2^12270208 is an apocalyptic number.

It is an amenable number.

12270208 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

12270208 is an equidigital number, since it uses as much as digits as its factorization.

12270208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 632 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 12270208 is about 3502.8856675604. The cubic root of 12270208 is about 230.6485037358.

Adding to 12270208 its reverse (80207221), we get a palindrome (92477429).

The spelling of 12270208 in words is "twelve million, two hundred seventy thousand, two hundred eight".