12506078 has 8 divisors (see below), whose sum is σ = 20202168. Its totient is φ = 5772024.

The previous prime is 12506069. The next prime is 12506083. The reversal of 12506078 is 87060521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12506078.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240476 + ... + 240527.

It is an arithmetic number, because the mean of its divisors is an integer number (2525271).

Almost surely, 2^12506078 is an apocalyptic number.

12506078 is a deficient number, since it is larger than the sum of its proper divisors (7696090).

12506078 is a wasteful number, since it uses less digits than its factorization.

12506078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481018.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 12506078 is about 3536.3933604734. The cubic root of 12506078 is about 232.1170510215.

Adding to 12506078 its reverse (87060521), we get a palindrome (99566599).

The spelling of 12506078 in words is "twelve million, five hundred six thousand, seventy-eight".