13528805 has 4 divisors (see below), whose sum is σ = 16234572. Its totient is φ = 10823040.

The previous prime is 13528783. The next prime is 13528813. The reversal of 13528805 is 50882531.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10452289 + 3076516 = 3233^2 + 1754^2 .

It is not a de Polignac number, because 13528805 - 2¹⁰ = 13527781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1352876 + ... + 1352885.

It is an arithmetic number, because the mean of its divisors is an integer number (4058643).

Almost surely, 2^13528805 is an apocalyptic number.

It is an amenable number.

13528805 is a deficient number, since it is larger than the sum of its proper divisors (2705767).

13528805 is an equidigital number, since it uses as much as digits as its factorization.

13528805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705766.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 13528805 is about 3678.1523894477. The cubic root of 13528805 is about 238.2793896639.

The spelling of 13528805 in words is "thirteen million, five hundred twenty-eight thousand, eight hundred five".