12780364 has 12 divisors (see below), whose sum is σ = 23338224. Its totient is φ = 6112304.

The previous prime is 12780349. The next prime is 12780373. The reversal of 12780364 is 46308721.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69367 + ... + 69550.

It is an arithmetic number, because the mean of its divisors is an integer number (1944852).

Almost surely, 2^12780364 is an apocalyptic number.

It is an amenable number.

12780364 is a deficient number, since it is larger than the sum of its proper divisors (10557860).

12780364 is a wasteful number, since it uses less digits than its factorization.

12780364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138944 (or 138942 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 12780364 is about 3574.9634963171. The cubic root of 12780364 is about 233.8017411460.

The spelling of 12780364 in words is "twelve million, seven hundred eighty thousand, three hundred sixty-four".