13539804 has 48 divisors (see below), whose sum is σ = 32810400. Its totient is φ = 4343040.

The previous prime is 13539791. The next prime is 13539811. The reversal of 13539804 is 40893531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38622 + ... + 38970.

It is an arithmetic number, because the mean of its divisors is an integer number (683550).

Almost surely, 2^13539804 is an apocalyptic number.

It is an amenable number.

13539804 is an abundant number, since it is smaller than the sum of its proper divisors (19270596).

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

13539804 is a wasteful number, since it uses less digits than its factorization.

13539804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470 (or 468 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 13539804 is about 3679.6472657036. The cubic root of 13539804 is about 238.3439463653.

The spelling of 13539804 in words is "thirteen million, five hundred thirty-nine thousand, eight hundred four".