13288563 has 16 divisors (see below), whose sum is σ = 19747840. Its totient is φ = 8831592.

The previous prime is 13288529. The next prime is 13288567. The reversal of 13288563 is 36588231.

13288563 is a `hidden beast` number, since 13 + 2 + 88 + 563 = 666.

13288563 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13288563 - 2⁸ = 13288307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13288567) 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, 11970 + ... + 13032.

It is an arithmetic number, because the mean of its divisors is an integer number (1234240).

Almost surely, 2^13288563 is an apocalyptic number.

13288563 is a deficient number, since it is larger than the sum of its proper divisors (6459277).

13288563 is a wasteful number, since it uses less digits than its factorization.

13288563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1529 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 13288563 is about 3645.3481315232. The cubic root of 13288563 is about 236.8605171885.

The spelling of 13288563 in words is "thirteen million, two hundred eighty-eight thousand, five hundred sixty-three".