12709818 has 32 divisors (see below), whose sum is σ = 30813120. Its totient is φ = 3851280.

The previous prime is 12709817. The next prime is 12709847. The reversal of 12709818 is 81890721.

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 (12709817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10105 + ... + 11292.

It is an arithmetic number, because the mean of its divisors is an integer number (962910).

Almost surely, 2^12709818 is an apocalyptic number.

12709818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12709818 is an abundant number, since it is smaller than the sum of its proper divisors (18103302).

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

12709818 is a wasteful number, since it uses less digits than its factorization.

12709818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21419 (or 21413 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 36.

The square root of 12709818 is about 3565.0831687353. The cubic root of 12709818 is about 233.3707617963.

The spelling of 12709818 in words is "twelve million, seven hundred nine thousand, eight hundred eighteen".