13505304 has 16 divisors (see below), whose sum is σ = 33763320. Its totient is φ = 4501760.

The previous prime is 13505299. The next prime is 13505321. The reversal of 13505304 is 40350531.

It is a super-2 number, since 2×13505304² = 364786472264832, which contains 22 as substring.

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, 281337 + ... + 281384.

Almost surely, 2^13505304 is an apocalyptic number.

It is an amenable number.

13505304 is an abundant number, since it is smaller than the sum of its proper divisors (20258016).

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

13505304 is a wasteful number, since it uses less digits than its factorization.

13505304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562730 (or 562726 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 13505304 is about 3674.9563262711. The cubic root of 13505304 is about 238.1413373240.

Adding to 13505304 its reverse (40350531), we get a palindrome (53855835).

The spelling of 13505304 in words is "thirteen million, five hundred five thousand, three hundred four".