12774784 has 64 divisors (see below), whose sum is σ = 28543680. Its totient is φ = 5644800.

The previous prime is 12774767. The next prime is 12774787. The reversal of 12774784 is 48747721.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12774787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60439 + ... + 60649.

It is an arithmetic number, because the mean of its divisors is an integer number (445995).

Almost surely, 2^12774784 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 12774784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14271840).

12774784 is an abundant number, since it is smaller than the sum of its proper divisors (15768896).

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

12774784 is a wasteful number, since it uses less digits than its factorization.

12774784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 267 counting only the distinct ones).

The product of its digits is 87808, while the sum is 40.

The square root of 12774784 is about 3574.1829835642. The cubic root of 12774784 is about 233.7677096785.

The spelling of 12774784 in words is "twelve million, seven hundred seventy-four thousand, seven hundred eighty-four".