12784442 has 16 divisors (see below), whose sum is σ = 22151232. Its totient is φ = 5469120.

The previous prime is 12784433. The next prime is 12784451. The reversal of 12784442 is 24448721.

It is an interprime number because it is at equal distance from previous prime (12784433) and next prime (12784451).

It is a junction number, because it is equal to n+sod(n) for n = 12784399 and 12784408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16718 + ... + 17465.

It is an arithmetic number, because the mean of its divisors is an integer number (1384452).

Almost surely, 2^12784442 is an apocalyptic number.

12784442 is a deficient number, since it is larger than the sum of its proper divisors (9366790).

12784442 is a wasteful number, since it uses less digits than its factorization.

12784442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34213.

The product of its digits is 14336, while the sum is 32.

The square root of 12784442 is about 3575.5338063008. The cubic root of 12784442 is about 233.8266059076.

The spelling of 12784442 in words is "twelve million, seven hundred eighty-four thousand, four hundred forty-two".