12780118 has 12 divisors (see below), whose sum is σ = 20758788. Its totient is φ = 5898360.

The previous prime is 12780113. The next prime is 12780121. The reversal of 12780118 is 81108721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12780113) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18568 + ... + 19243.

It is an arithmetic number, because the mean of its divisors is an integer number (1729899).

Almost surely, 2^12780118 is an apocalyptic number.

12780118 is a deficient number, since it is larger than the sum of its proper divisors (7978670).

12780118 is a wasteful number, since it uses less digits than its factorization.

12780118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37839 (or 37826 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 12780118 is about 3574.9290902058. The cubic root of 12780118 is about 233.8002410428.

Adding to 12780118 its reverse (81108721), we get a palindrome (93888839).

The spelling of 12780118 in words is "twelve million, seven hundred eighty thousand, one hundred eighteen".