13109636 has 6 divisors (see below), whose sum is σ = 22941870. Its totient is φ = 6554816.

The previous prime is 13109633. The next prime is 13109651. The reversal of 13109636 is 63690131.

It can be written as a sum of positive squares in only one way, i.e., 10240000 + 2869636 = 3200^2 + 1694^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13109599 and 13109608.

It is not an unprimeable number, because it can be changed into a prime (13109633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1638701 + ... + 1638708.

It is an arithmetic number, because the mean of its divisors is an integer number (3823645).

Almost surely, 2^13109636 is an apocalyptic number.

It is an amenable number.

13109636 is a deficient number, since it is larger than the sum of its proper divisors (9832234).

13109636 is a wasteful number, since it uses less digits than its factorization.

13109636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277413 (or 3277411 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 13109636 is about 3620.7231321933. The cubic root of 13109636 is about 235.7926216175.

Adding to 13109636 its reverse (63690131), we get a palindrome (76799767).

The spelling of 13109636 in words is "thirteen million, one hundred nine thousand, six hundred thirty-six".