12478556 has 12 divisors (see below), whose sum is σ = 21868392. Its totient is φ = 6230448.

The previous prime is 12478541. The next prime is 12478567. The reversal of 12478556 is 65587421.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 1766 + ... + 5298.

It is an arithmetic number, because the mean of its divisors is an integer number (1822366).

Almost surely, 2^12478556 is an apocalyptic number.

It is a pronic number, being equal to 3532×3533.

It is an amenable number.

12478556 is a deficient number, since it is larger than the sum of its proper divisors (9389836).

12478556 is a wasteful number, since it uses less digits than its factorization.

12478556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420 (or 4418 counting only the distinct ones).

The product of its digits is 67200, while the sum is 38.

The square root of 12478556 is about 3532.4999646143. The cubic root of 12478556 is about 231.9466534101.

The spelling of 12478556 in words is "twelve million, four hundred seventy-eight thousand, five hundred fifty-six".