12520304 has 10 divisors (see below), whose sum is σ = 24258120. Its totient is φ = 6260144.

The previous prime is 12520289. The next prime is 12520307. The reversal of 12520304 is 40302521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12520307) 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 as a sum of consecutive naturals, namely, 391244 + ... + 391275.

It is an arithmetic number, because the mean of its divisors is an integer number (2425812).

Almost surely, 2^12520304 is an apocalyptic number.

It is an amenable number.

12520304 is a deficient number, since it is larger than the sum of its proper divisors (11737816).

12520304 is an equidigital number, since it uses as much as digits as its factorization.

12520304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782527 (or 782521 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 12520304 is about 3538.4041600699. The cubic root of 12520304 is about 232.2050307991.

Adding to 12520304 its reverse (40302521), we get a palindrome (52822825).

The spelling of 12520304 in words is "twelve million, five hundred twenty thousand, three hundred four".