13385556 has 36 divisors (see below), whose sum is σ = 34626592. Its totient is φ = 4357584.

The previous prime is 13385543. The next prime is 13385573. The reversal of 13385556 is 65558331.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 13385556.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 2776 + ... + 5871.

Almost surely, 2^13385556 is an apocalyptic number.

It is an amenable number.

13385556 is an abundant number, since it is smaller than the sum of its proper divisors (21241036).

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

13385556 is a wasteful number, since it uses less digits than its factorization.

13385556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8700 (or 8695 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 13385556 is about 3658.6276115505. The cubic root of 13385556 is about 237.4354010829.

Adding to 13385556 its product of digits (54000), we get a square (13439556 = 3666²).

The spelling of 13385556 in words is "thirteen million, three hundred eighty-five thousand, five hundred fifty-six".