12864522 has 16 divisors (see below), whose sum is σ = 28068192. Its totient is φ = 3898320.

The previous prime is 12864517. The next prime is 12864541. The reversal of 12864522 is 22546821.

It is a self number, because there is not a number n which added to its sum of digits gives 12864522.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97393 + ... + 97524.

It is an arithmetic number, because the mean of its divisors is an integer number (1754262).

Almost surely, 2^12864522 is an apocalyptic number.

12864522 is an abundant number, since it is smaller than the sum of its proper divisors (15203670).

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

12864522 is a wasteful number, since it uses less digits than its factorization.

12864522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194933.

The product of its digits is 7680, while the sum is 30.

The square root of 12864522 is about 3586.7146527149. The cubic root of 12864522 is about 234.3138093769.

The spelling of 12864522 in words is "twelve million, eight hundred sixty-four thousand, five hundred twenty-two".