12718734 has 24 divisors (see below), whose sum is σ = 29591208. Its totient is φ = 3633840.

The previous prime is 12718721. The next prime is 12718757. The reversal of 12718734 is 43781721.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12718695 and 12718704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21337 + ... + 21924.

It is an arithmetic number, because the mean of its divisors is an integer number (1232967).

Almost surely, 2^12718734 is an apocalyptic number.

12718734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12718734 is an abundant number, since it is smaller than the sum of its proper divisors (16872474).

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

12718734 is a wasteful number, since it uses less digits than its factorization.

12718734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43280 (or 43273 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 12718734 is about 3566.3334112222. Note that the first 3 decimals coincide. The cubic root of 12718734 is about 233.4253192876.

The spelling of 12718734 in words is "twelve million, seven hundred eighteen thousand, seven hundred thirty-four".