12507808 has 12 divisors (see below), whose sum is σ = 24624810. Its totient is φ = 6253888.

The previous prime is 12507773. The next prime is 12507821. The reversal of 12507808 is 80870521.

It can be written as a sum of positive squares in only one way, i.e., 8928144 + 3579664 = 2988^2 + 1892^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12507808.

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, 195403 + ... + 195466.

Almost surely, 2^12507808 is an apocalyptic number.

It is an amenable number.

12507808 is a deficient number, since it is larger than the sum of its proper divisors (12117002).

12507808 is an equidigital number, since it uses as much as digits as its factorization.

12507808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390879 (or 390871 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 12507808 is about 3536.6379515014. The cubic root of 12507808 is about 232.1277536570.

The spelling of 12507808 in words is "twelve million, five hundred seven thousand, eight hundred eight".