12730940 has 12 divisors (see below), whose sum is σ = 26735016. Its totient is φ = 5092368.

The previous prime is 12730933. The next prime is 12730957. The reversal of 12730940 is 4903721.

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, 318254 + ... + 318293.

It is an arithmetic number, because the mean of its divisors is an integer number (2227918).

Almost surely, 2^12730940 is an apocalyptic number.

12730940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12730940 is an abundant number, since it is smaller than the sum of its proper divisors (14004076).

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

12730940 is a wasteful number, since it uses less digits than its factorization.

12730940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636556 (or 636554 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 12730940 is about 3568.0442822364. The cubic root of 12730940 is about 233.4999671388.

The spelling of 12730940 in words is "twelve million, seven hundred thirty thousand, nine hundred forty".