13290436 has 12 divisors (see below), whose sum is σ = 23639980. Its totient is φ = 6536160.

The previous prime is 13290421. The next prime is 13290449. The reversal of 13290436 is 63409231.

13290436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 4326400 + 8964036 = 2080^2 + 2994^2 .

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, 26991 + ... + 27478.

Almost surely, 2^13290436 is an apocalyptic number.

It is an amenable number.

13290436 is a deficient number, since it is larger than the sum of its proper divisors (10349544).

13290436 is a wasteful number, since it uses less digits than its factorization.

13290436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54534 (or 54532 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 13290436 is about 3645.6050252324. The cubic root of 13290436 is about 236.8716450260.

Adding to 13290436 its reverse (63409231), we get a palindrome (76699667).

The spelling of 13290436 in words is "thirteen million, two hundred ninety thousand, four hundred thirty-six".