12818560 has 32 divisors (see below), whose sum is σ = 30645900. Its totient is φ = 5127168.

The previous prime is 12818557. The next prime is 12818563. The reversal of 12818560 is 6581821.

It is an interprime number because it is at equal distance from previous prime (12818557) and next prime (12818563).

It can be written as a sum of positive squares in 2 ways, for example, as 12334144 + 484416 = 3512^2 + 696^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (12818563) 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, 9375 + ... + 10654.

Almost surely, 2^12818560 is an apocalyptic number.

12818560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12818560 is an abundant number, since it is smaller than the sum of its proper divisors (17827340).

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

12818560 is an equidigital number, since it uses as much as digits as its factorization.

12818560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20048 (or 20036 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 12818560 is about 3580.3016632681. The cubic root of 12818560 is about 234.0344264736.

The spelling of 12818560 in words is "twelve million, eight hundred eighteen thousand, five hundred sixty".