12478822 has 4 divisors (see below), whose sum is σ = 18718236. Its totient is φ = 6239410.

The previous prime is 12478819. The next prime is 12478849. The reversal of 12478822 is 22887421.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3119704 + ... + 3119707.

It is an arithmetic number, because the mean of its divisors is an integer number (4679559).

Almost surely, 2^12478822 is an apocalyptic number.

12478822 is a deficient number, since it is larger than the sum of its proper divisors (6239414).

12478822 is an equidigital number, since it uses as much as digits as its factorization.

12478822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6239413.

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

The square root of 12478822 is about 3532.5376148033. The cubic root of 12478822 is about 231.9483015007.

The spelling of 12478822 in words is "twelve million, four hundred seventy-eight thousand, eight hundred twenty-two".