12730918 has 8 divisors (see below), whose sum is σ = 19456848. Its totient is φ = 6245304.

The previous prime is 12730889. The next prime is 12730933. The reversal of 12730918 is 81903721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12730918.

It is a congruent number.

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, 59946 + ... + 60157.

It is an arithmetic number, because the mean of its divisors is an integer number (2432106).

Almost surely, 2^12730918 is an apocalyptic number.

12730918 is a deficient number, since it is larger than the sum of its proper divisors (6725930).

12730918 is a wasteful number, since it uses less digits than its factorization.

12730918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120158.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 12730918 is about 3568.0411993137. The cubic root of 12730918 is about 233.4998326370.

The spelling of 12730918 in words is "twelve million, seven hundred thirty thousand, nine hundred eighteen".