13505004 has 36 divisors (see below), whose sum is σ = 36147384. Its totient is φ = 4236672.

The previous prime is 13504999. The next prime is 13505033. The reversal of 13505004 is 40050531.

13505004 is nontrivially palindromic in base 16.

13505004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10422 + ... + 11645.

It is an arithmetic number, because the mean of its divisors is an integer number (1004094).

Almost surely, 2^13505004 is an apocalyptic number.

It is an amenable number.

13505004 is an abundant number, since it is smaller than the sum of its proper divisors (22642380).

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

13505004 is a wasteful number, since it uses less digits than its factorization.

13505004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22094 (or 22089 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 13505004 is about 3674.9155092328. The cubic root of 13505004 is about 238.1395739938.

Adding to 13505004 its reverse (40050531), we get a palindrome (53555535).

The spelling of 13505004 in words is "thirteen million, five hundred five thousand, four".