12804478 has 8 divisors (see below), whose sum is σ = 19450080. Its totient is φ = 6321120.

The previous prime is 12804443. The next prime is 12804481. The reversal of 12804478 is 87440821.

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

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, 40363 + ... + 40678.

It is an arithmetic number, because the mean of its divisors is an integer number (2431260).

Almost surely, 2^12804478 is an apocalyptic number.

12804478 is a deficient number, since it is larger than the sum of its proper divisors (6645602).

12804478 is an equidigital number, since it uses as much as digits as its factorization.

12804478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81122.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 12804478 is about 3578.3345287997. The cubic root of 12804478 is about 233.9486945254.

The spelling of 12804478 in words is "twelve million, eight hundred four thousand, four hundred seventy-eight".