13855436 has 36 divisors (see below), whose sum is σ = 28421568. Its totient is φ = 5892768.

The previous prime is 13855433. The next prime is 13855447. The reversal of 13855436 is 63455831.

It is a junction number, because it is equal to n+sod(n) for n = 13855396 and 13855405.

It is not an unprimeable number, because it can be changed into a prime (13855433) 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 in 11 ways as a sum of consecutive naturals, for example, 43550 + ... + 43866.

It is an arithmetic number, because the mean of its divisors is an integer number (789488).

Almost surely, 2^13855436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13855436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14210784).

13855436 is an abundant number, since it is smaller than the sum of its proper divisors (14566132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13855436 is a wasteful number, since it uses less digits than its factorization.

13855436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 549 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

The square root of 13855436 is about 3722.2890806599. The cubic root of 13855436 is about 240.1817835729.

The spelling of 13855436 in words is "thirteen million, eight hundred fifty-five thousand, four hundred thirty-six".