12983784 has 96 divisors (see below), whose sum is σ = 37920960. Its totient is φ = 3688960.

The previous prime is 12983779. The next prime is 12983791. The reversal of 12983784 is 48738921.

12983784 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49237 + ... + 49499.

It is an arithmetic number, because the mean of its divisors is an integer number (395010).

Almost surely, 2^12983784 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 12983784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18960480).

12983784 is an abundant number, since it is smaller than the sum of its proper divisors (24937176).

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

12983784 is a wasteful number, since it uses less digits than its factorization.

12983784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311 (or 296 counting only the distinct ones).

The product of its digits is 96768, while the sum is 42.

The square root of 12983784 is about 3603.3018191653. The cubic root of 12983784 is about 235.0356608022.

It can be divided in two parts, 129837 and 84, that added together give a palindrome (129921).

The spelling of 12983784 in words is "twelve million, nine hundred eighty-three thousand, seven hundred eighty-four".