130904 has 8 divisors (see below), whose sum is σ = 245460. Its totient is φ = 65448.

The previous prime is 130873. The next prime is 130927. The reversal of 130904 is 409031.

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is a plaindrome in base 13 and base 15.

It is a congruent number.

It is an unprimeable number.

130904 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8174 + ... + 8189.

2¹³⁰⁹⁰⁴ is an apocalyptic number.

It is an amenable number.

130904 is a deficient number, since it is larger than the sum of its proper divisors (114556).

130904 is a wasteful number, since it uses less digits than its factorization.

130904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16369 (or 16365 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 130904 is about 361.8065781602. The cubic root of 130904 is about 50.7751216352.

Adding to 130904 its reverse (409031), we get a palindrome (539935).

The spelling of 130904 in words is "one hundred thirty thousand, nine hundred four".