13785528 has 32 divisors (see below), whose sum is σ = 34594560. Its totient is φ = 4577760.

The previous prime is 13785517. The next prime is 13785529. The reversal of 13785528 is 82558731.

13785528 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13785529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6433 + ... + 8303.

It is an arithmetic number, because the mean of its divisors is an integer number (1081080).

Almost surely, 2^13785528 is an apocalyptic number.

It is an amenable number.

13785528 is an abundant number, since it is smaller than the sum of its proper divisors (20809032).

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

13785528 is a wasteful number, since it uses less digits than its factorization.

13785528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187 (or 2183 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 13785528 is about 3712.8867475322. The cubic root of 13785528 is about 239.7771542575. Note that the first 3 decimals are identical.

The spelling of 13785528 in words is "thirteen million, seven hundred eighty-five thousand, five hundred twenty-eight".