12792478 has 4 divisors (see below), whose sum is σ = 19188720. Its totient is φ = 6396238.

The previous prime is 12792473. The next prime is 12792499. The reversal of 12792478 is 87429721.

12792478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87429721 = 127 ⋅688423.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 12792478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12792473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3198118 + ... + 3198121.

It is an arithmetic number, because the mean of its divisors is an integer number (4797180).

Almost surely, 2^12792478 is an apocalyptic number.

12792478 is a deficient number, since it is larger than the sum of its proper divisors (6396242).

12792478 is an equidigital number, since it uses as much as digits as its factorization.

12792478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6396241.

The product of its digits is 56448, while the sum is 40.

The square root of 12792478 is about 3576.6573780557. The cubic root of 12792478 is about 233.8755882836.

The spelling of 12792478 in words is "twelve million, seven hundred ninety-two thousand, four hundred seventy-eight".