12813522 has 16 divisors (see below), whose sum is σ = 25855200. Its totient is φ = 4233152.

The previous prime is 12813517. The next prime is 12813523. The reversal of 12813522 is 22531821.

It is a junction number, because it is equal to n+sod(n) for n = 12813492 and 12813501.

It is not an unprimeable number, because it can be changed into a prime (12813523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8772 + ... + 10127.

It is an arithmetic number, because the mean of its divisors is an integer number (1615950).

Almost surely, 2^12813522 is an apocalyptic number.

12813522 is an abundant number, since it is smaller than the sum of its proper divisors (13041678).

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

12813522 is a wasteful number, since it uses less digits than its factorization.

12813522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19017.

The product of its digits is 960, while the sum is 24.

The square root of 12813522 is about 3579.5980221248. The cubic root of 12813522 is about 234.0037620843.

The spelling of 12813522 in words is "twelve million, eight hundred thirteen thousand, five hundred twenty-two".