13528865 has 32 divisors (see below), whose sum is σ = 19728384. Its totient is φ = 8709120.

The previous prime is 13528859. The next prime is 13528891. The reversal of 13528865 is 56882531.

It is not a de Polignac number, because 13528865 - 2¹² = 13524769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39977 + ... + 40313.

It is an arithmetic number, because the mean of its divisors is an integer number (616512).

Almost surely, 2^13528865 is an apocalyptic number.

It is an amenable number.

13528865 is a deficient number, since it is larger than the sum of its proper divisors (6199519).

13528865 is a wasteful number, since it uses less digits than its factorization.

13528865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417.

The product of its digits is 57600, while the sum is 38.

The square root of 13528865 is about 3678.1605457076. The cubic root of 13528865 is about 238.2797419183.

The spelling of 13528865 in words is "thirteen million, five hundred twenty-eight thousand, eight hundred sixty-five".