12784782 has 48 divisors (see below), whose sum is σ = 27806832. Its totient is φ = 3916800.

The previous prime is 12784771. The next prime is 12784787. The reversal of 12784782 is 28748721.

Its product of digits (50176) is a multiple of the sum of its prime divisors (196).

It is a self number, because there is not a number n which added to its sum of digits gives 12784782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12784787) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126532 + ... + 126632.

It is an arithmetic number, because the mean of its divisors is an integer number (579309).

Almost surely, 2^12784782 is an apocalyptic number.

12784782 is an abundant number, since it is smaller than the sum of its proper divisors (15022050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12784782 is a wasteful number, since it uses less digits than its factorization.

12784782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213 (or 196 counting only the distinct ones).

The product of its digits is 50176, while the sum is 39.

The square root of 12784782 is about 3575.5813513330. The cubic root of 12784782 is about 233.8286787484.

The spelling of 12784782 in words is "twelve million, seven hundred eighty-four thousand, seven hundred eighty-two".