13856285 has 4 divisors (see below), whose sum is σ = 16627548. Its totient is φ = 11085024.

The previous prime is 13856279. The next prime is 13856299. The reversal of 13856285 is 58265831.

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 4351396 + 9504889 = 2086^2 + 3083^2 .

It is a cyclic number.

It is not a de Polignac number, because 13856285 - 2⁶ = 13856221 is a prime.

It is a Duffinian number.

It is a Curzon 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, 1385624 + ... + 1385633.

It is an arithmetic number, because the mean of its divisors is an integer number (4156887).

Almost surely, 2^13856285 is an apocalyptic number.

It is an amenable number.

13856285 is a deficient number, since it is larger than the sum of its proper divisors (2771263).

13856285 is an equidigital number, since it uses as much as digits as its factorization.

13856285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771262.

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

The square root of 13856285 is about 3722.4031216406. The cubic root of 13856285 is about 240.1866892328.

It can be divided in two parts, 13856 and 285, that added together give a palindrome (14141).

The spelling of 13856285 in words is "thirteen million, eight hundred fifty-six thousand, two hundred eighty-five".