12784536 has 48 divisors (see below), whose sum is σ = 35568000. Its totient is φ = 4145472.

The previous prime is 12784523. The next prime is 12784547. The reversal of 12784536 is 63548721.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12784536.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 265 + ... + 5063.

It is an arithmetic number, because the mean of its divisors is an integer number (741000).

Almost surely, 2^12784536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12784536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17784000).

12784536 is an abundant number, since it is smaller than the sum of its proper divisors (22783464).

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

12784536 is a wasteful number, since it uses less digits than its factorization.

12784536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4848 (or 4841 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 12784536 is about 3575.5469511671. The cubic root of 12784536 is about 233.8271789908.

The spelling of 12784536 in words is "twelve million, seven hundred eighty-four thousand, five hundred thirty-six".