13285816 has 8 divisors (see below), whose sum is σ = 24910920. Its totient is φ = 6642904.

The previous prime is 13285793. The next prime is 13285817. The reversal of 13285816 is 61858231.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13285817) by changing a digit.

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 as a sum of consecutive naturals, namely, 830356 + ... + 830371.

It is an arithmetic number, because the mean of its divisors is an integer number (3113865).

Almost surely, 2^13285816 is an apocalyptic number.

It is an amenable number.

13285816 is a deficient number, since it is larger than the sum of its proper divisors (11625104).

13285816 is a wasteful number, since it uses less digits than its factorization.

13285816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660733 (or 1660729 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The square root of 13285816 is about 3644.9713304771. The cubic root of 13285816 is about 236.8441948648.

The spelling of 13285816 in words is "thirteen million, two hundred eighty-five thousand, eight hundred sixteen".