12690208 has 24 divisors (see below), whose sum is σ = 25108272. Its totient is φ = 6313536.

The previous prime is 12690199. The next prime is 12690259. The reversal of 12690208 is 80209621.

It is a happy number.

It is a super-2 number, since 2×12690208² = 322082758166528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6391 + ... + 8137.

It is an arithmetic number, because the mean of its divisors is an integer number (1046178).

Almost surely, 2^12690208 is an apocalyptic number.

It is an amenable number.

12690208 is a deficient number, since it is larger than the sum of its proper divisors (12418064).

12690208 is a wasteful number, since it uses less digits than its factorization.

12690208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1984 (or 1976 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 12690208 is about 3562.3318205917. The cubic root of 12690208 is about 233.2506772993.

Adding to 12690208 its reverse (80209621), we get a palindrome (92899829).

The spelling of 12690208 in words is "twelve million, six hundred ninety thousand, two hundred eight".