12727816 has 16 divisors (see below), whose sum is σ = 23940540. Its totient is φ = 6343680.

The previous prime is 12727811. The next prime is 12727817. The reversal of 12727816 is 61872721.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12602500 + 125316 = 3550^2 + 354^2 .

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (12727811) 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, 336 + ... + 5056.

Almost surely, 2^12727816 is an apocalyptic number.

It is an amenable number.

12727816 is a deficient number, since it is larger than the sum of its proper divisors (11212724).

12727816 is a wasteful number, since it uses less digits than its factorization.

12727816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5064 (or 5060 counting only the distinct ones).

The product of its digits is 9408, while the sum is 34.

The square root of 12727816 is about 3567.6064805413. The cubic root of 12727816 is about 233.4808663347.

The spelling of 12727816 in words is "twelve million, seven hundred twenty-seven thousand, eight hundred sixteen".