12215308 has 18 divisors (see below), whose sum is σ = 24867276. Its totient is φ = 5235048.

The previous prime is 12215297. The next prime is 12215317. The reversal of 12215308 is 80351221.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30966 + ... + 31357.

Almost surely, 2^12215308 is an apocalyptic number.

It is an amenable number.

12215308 is an abundant number, since it is smaller than the sum of its proper divisors (12651968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12215308 is a wasteful number, since it uses less digits than its factorization.

12215308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62341 (or 62332 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 12215308 is about 3495.0404861747. The cubic root of 12215308 is about 230.3039962598.

Adding to 12215308 its reverse (80351221), we get a palindrome (92566529).

The spelling of 12215308 in words is "twelve million, two hundred fifteen thousand, three hundred eight".