13205528 has 16 divisors (see below), whose sum is σ = 28297680. Its totient is φ = 5659488.

The previous prime is 13205509. The next prime is 13205531. The reversal of 13205528 is 82550231.

It is a junction number, because it is equal to n+sod(n) for n = 13205497 and 13205506.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 117851 + ... + 117962.

It is an arithmetic number, because the mean of its divisors is an integer number (1768605).

Almost surely, 2^13205528 is an apocalyptic number.

It is an amenable number.

13205528 is an abundant number, since it is smaller than the sum of its proper divisors (15092152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13205528 is a wasteful number, since it uses less digits than its factorization.

13205528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235826 (or 235822 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 13205528 is about 3633.9411112455. The cubic root of 13205528 is about 236.3661366420.

Adding to 13205528 its reverse (82550231), we get a palindrome (95755759).

The spelling of 13205528 in words is "thirteen million, two hundred five thousand, five hundred twenty-eight".