12769218 has 128 divisors (see below), whose sum is σ = 36771840. Its totient is φ = 3188160.

The previous prime is 12769217. The next prime is 12769259. The reversal of 12769218 is 81296721.

12769218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12769213) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 153805 + ... + 153887.

It is an arithmetic number, because the mean of its divisors is an integer number (287280).

Almost surely, 2^12769218 is an apocalyptic number.

12769218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12769218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18385920).

12769218 is an abundant number, since it is smaller than the sum of its proper divisors (24002622).

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

12769218 is a wasteful number, since it uses less digits than its factorization.

12769218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 143 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 12769218 is about 3573.4042592464. The cubic root of 12769218 is about 233.7337537204.

The spelling of 12769218 in words is "twelve million, seven hundred sixty-nine thousand, two hundred eighteen".