12518406 has 12 divisors (see below), whose sum is σ = 27123252. Its totient is φ = 4172796.

The previous prime is 12518399. The next prime is 12518411. The reversal of 12518406 is 60481521.

12518406 is a `hidden beast` number, since 1 + 251 + 8 + 406 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 12518406.

It is a congruent number.

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, 347716 + ... + 347751.

It is an arithmetic number, because the mean of its divisors is an integer number (2260271).

Almost surely, 2^12518406 is an apocalyptic number.

12518406 is an abundant number, since it is smaller than the sum of its proper divisors (14604846).

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

12518406 is a wasteful number, since it uses less digits than its factorization.

12518406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695475 (or 695472 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 12518406 is about 3538.1359499036. The cubic root of 12518406 is about 232.1932965946.

Adding to 12518406 its reverse (60481521), we get a palindrome (72999927).

The spelling of 12518406 in words is "twelve million, five hundred eighteen thousand, four hundred six".