12507304 has 8 divisors (see below), whose sum is σ = 23451210. Its totient is φ = 6253648.

The previous prime is 12507269. The next prime is 12507317. The reversal of 12507304 is 40370521.

It can be written as a sum of positive squares in only one way, i.e., 10227204 + 2280100 = 3198^2 + 1510^2 .

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

It is an unprimeable number.

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, 781699 + ... + 781714.

Almost surely, 2^12507304 is an apocalyptic number.

It is an amenable number.

12507304 is a deficient number, since it is larger than the sum of its proper divisors (10943906).

12507304 is a wasteful number, since it uses less digits than its factorization.

12507304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563419 (or 1563415 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 12507304 is about 3536.5666966707. The cubic root of 12507304 is about 232.1246357656.

Adding to 12507304 its reverse (40370521), we get a palindrome (52877825).

The spelling of 12507304 in words is "twelve million, five hundred seven thousand, three hundred four".