12843720 has 48 divisors (see below), whose sum is σ = 41743260. Its totient is φ = 3424896.

The previous prime is 12843689. The next prime is 12843731. The reversal of 12843720 is 2734821.

It can be written as a sum of positive squares in 2 ways, for example, as 12830724 + 12996 = 3582^2 + 114^2 .

It is a super-2 number, since 2×12843720² = 329922286876800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17479 + ... + 18198.

Almost surely, 2^12843720 is an apocalyptic number.

12843720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12843720 is an abundant number, since it is smaller than the sum of its proper divisors (28899540).

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

12843720 is a wasteful number, since it uses less digits than its factorization.

12843720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35694 (or 35687 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 12843720 is about 3583.8136112248. The cubic root of 12843720 is about 234.1874456865.

The spelling of 12843720 in words is "twelve million, eight hundred forty-three thousand, seven hundred twenty".