13505756 has 12 divisors (see below), whose sum is σ = 25783800. Its totient is φ = 6138960.

The previous prime is 13505747. The next prime is 13505759. The reversal of 13505756 is 65750531.

13505756 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13505759) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153431 + ... + 153518.

It is an arithmetic number, because the mean of its divisors is an integer number (2148650).

Almost surely, 2^13505756 is an apocalyptic number.

It is an amenable number.

13505756 is a deficient number, since it is larger than the sum of its proper divisors (12278044).

13505756 is a wasteful number, since it uses less digits than its factorization.

13505756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306964 (or 306962 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 13505756 is about 3675.0178230860. The cubic root of 13505756 is about 238.1439940255.

The spelling of 13505756 in words is "thirteen million, five hundred five thousand, seven hundred fifty-six".