12943520 has 24 divisors (see below), whose sum is σ = 30579444. Its totient is φ = 5177344.

The previous prime is 12943519. The next prime is 12943531. The reversal of 12943520 is 2534921.

It can be written as a sum of positive squares in 2 ways, for example, as 12588304 + 355216 = 3548^2 + 596^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12943520.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40289 + ... + 40608.

Almost surely, 2^12943520 is an apocalyptic number.

12943520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12943520 is an abundant number, since it is smaller than the sum of its proper divisors (17635924).

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

12943520 is an equidigital number, since it uses as much as digits as its factorization.

12943520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80912 (or 80904 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 12943520 is about 3597.7103830075. The cubic root of 12943520 is about 234.7924529381.

The spelling of 12943520 in words is "twelve million, nine hundred forty-three thousand, five hundred twenty".