13802785 has 12 divisors (see below), whose sum is σ = 16968852. Its totient is φ = 10778208.

The previous prime is 13802777. The next prime is 13802791. The reversal of 13802785 is 58720831.

It can be written as a sum of positive squares in 2 ways, for example, as 8803089 + 4999696 = 2967^2 + 2236^2 .

It is not a de Polignac number, because 13802785 - 2³ = 13802777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13802785.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8499 + ... + 9991.

It is an arithmetic number, because the mean of its divisors is an integer number (1414071).

Almost surely, 2^13802785 is an apocalyptic number.

It is an amenable number.

13802785 is a deficient number, since it is larger than the sum of its proper divisors (3166067).

13802785 is an equidigital number, since it uses as much as digits as its factorization.

13802785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584 (or 1541 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 13802785 is about 3715.2099536904. The cubic root of 13802785 is about 239.8771651517.

The spelling of 13802785 in words is "thirteen million, eight hundred two thousand, seven hundred eighty-five".