12778364 has 12 divisors (see below), whose sum is σ = 22423800. Its totient is φ = 6371568.

The previous prime is 12778361. The next prime is 12778369. The reversal of 12778364 is 46387721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12778361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2699 + ... + 5730.

It is an arithmetic number, because the mean of its divisors is an integer number (1868650).

Almost surely, 2^12778364 is an apocalyptic number.

It is an amenable number.

12778364 is a deficient number, since it is larger than the sum of its proper divisors (9645436).

12778364 is a wasteful number, since it uses less digits than its factorization.

12778364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8812 (or 8810 counting only the distinct ones).

The product of its digits is 56448, while the sum is 38.

The square root of 12778364 is about 3574.6837622369. The cubic root of 12778364 is about 233.7895446265.

The spelling of 12778364 in words is "twelve million, seven hundred seventy-eight thousand, three hundred sixty-four".