130804 has 12 divisors (see below), whose sum is σ = 233604. Its totient is φ = 64064.

The previous prime is 130787. The next prime is 130807. The reversal of 130804 is 408031.

130804 = 62² + 63² + ... + 85².

It can be written as a sum of positive squares in 2 ways, for example, as 40804 + 90000 = 202^2 + 300^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97 + ... + 520.

It is an arithmetic number, because the mean of its divisors is an integer number (19467).

2¹³⁰⁸⁰⁴ is an apocalyptic number.

It is an amenable number.

130804 is a deficient number, since it is larger than the sum of its proper divisors (102800).

130804 is a wasteful number, since it uses less digits than its factorization.

130804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 672 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 130804 is about 361.6683563709. The cubic root of 130804 is about 50.7621889883.

Adding to 130804 its reverse (408031), we get a palindrome (538835).

The spelling of 130804 in words is "one hundred thirty thousand, eight hundred four".