12860784 has 120 divisors (see below), whose sum is σ = 38584832. Its totient is φ = 3991680.

The previous prime is 12860759. The next prime is 12860791. The reversal of 12860784 is 48706821.

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

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 191919 + ... + 191985.

Almost surely, 2^12860784 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 12860784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19292416).

12860784 is an abundant number, since it is smaller than the sum of its proper divisors (25724048).

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

12860784 is a wasteful number, since it uses less digits than its factorization.

12860784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 12860784 is about 3586.1935251740. The cubic root of 12860784 is about 234.2911125920.

The spelling of 12860784 in words is "twelve million, eight hundred sixty thousand, seven hundred eighty-four".