12784022 has 4 divisors (see below), whose sum is σ = 19176036. Its totient is φ = 6392010.

The previous prime is 12784007. The next prime is 12784033. The reversal of 12784022 is 22048721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22048721 = 19 ⋅1160459.

It is a junction number, because it is equal to n+sod(n) for n = 12783982 and 12784000.

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, 3196004 + ... + 3196007.

It is an arithmetic number, because the mean of its divisors is an integer number (4794009).

Almost surely, 2^12784022 is an apocalyptic number.

12784022 is a deficient number, since it is larger than the sum of its proper divisors (6392014).

12784022 is an equidigital number, since it uses as much as digits as its factorization.

12784022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6392013.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 12784022 is about 3575.4750733294. The cubic root of 12784022 is about 233.8240452887.

The spelling of 12784022 in words is "twelve million, seven hundred eighty-four thousand, twenty-two".