12774916 has 96 divisors (see below), whose sum is σ = 30643200. Its totient is φ = 4510080.

The previous prime is 12774911. The next prime is 12774917. The reversal of 12774916 is 61947721.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (12774911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216495 + ... + 216553.

It is an arithmetic number, because the mean of its divisors is an integer number (319200).

Almost surely, 2^12774916 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 12774916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15321600).

12774916 is an abundant number, since it is smaller than the sum of its proper divisors (17868284).

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

12774916 is a wasteful number, since it uses less digits than its factorization.

12774916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 135 counting only the distinct ones).

The product of its digits is 21168, while the sum is 37.

The square root of 12774916 is about 3574.2014492751. The cubic root of 12774916 is about 233.7685148384.

It can be divided in two parts, 127749 and 16, that added together give a triangular number (127765 = T₅₀₅).

The spelling of 12774916 in words is "twelve million, seven hundred seventy-four thousand, nine hundred sixteen".