12797140 has 12 divisors (see below), whose sum is σ = 26874036. Its totient is φ = 5118848.

The previous prime is 12797117. The next prime is 12797143. The reversal of 12797140 is 4179721.

It can be written as a sum of positive squares in 2 ways, for example, as 9156676 + 3640464 = 3026^2 + 1908^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12797143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319909 + ... + 319948.

It is an arithmetic number, because the mean of its divisors is an integer number (2239503).

Almost surely, 2^12797140 is an apocalyptic number.

12797140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12797140 is an abundant number, since it is smaller than the sum of its proper divisors (14076896).

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

12797140 is a wasteful number, since it uses less digits than its factorization.

12797140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639866 (or 639864 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 12797140 is about 3577.3090445194. The cubic root of 12797140 is about 233.9039954869.

The spelling of 12797140 in words is "twelve million, seven hundred ninety-seven thousand, one hundred forty".