13109356 has 48 divisors (see below), whose sum is σ = 26276544. Its totient is φ = 5677056.

The previous prime is 13109347. The next prime is 13109357. The reversal of 13109356 is 65390131.

It is not an unprimeable number, because it can be changed into a prime (13109357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115956 + ... + 116068.

It is an arithmetic number, because the mean of its divisors is an integer number (547428).

Almost surely, 2^13109356 is an apocalyptic number.

It is an amenable number.

13109356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

13109356 is a wasteful number, since it uses less digits than its factorization.

13109356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 13109356 is about 3620.6844656777. The cubic root of 13109356 is about 235.7909428929.

Adding to 13109356 its reverse (65390131), we get a palindrome (78499487).

The spelling of 13109356 in words is "thirteen million, one hundred nine thousand, three hundred fifty-six".