12724516 has 18 divisors (see below), whose sum is σ = 25903878. Its totient is φ = 5453280.

The previous prime is 12724501. The next prime is 12724519. The reversal of 12724516 is 61542721.

It can be written as a sum of positive squares in only one way, i.e., 7452900 + 5271616 = 2730^2 + 2296^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (12724519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32265 + ... + 32656.

Almost surely, 2^12724516 is an apocalyptic number.

It is an amenable number.

12724516 is an abundant number, since it is smaller than the sum of its proper divisors (13179362).

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

12724516 is a wasteful number, since it uses less digits than its factorization.

12724516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64939 (or 64930 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 12724516 is about 3567.1439556037. The cubic root of 12724516 is about 233.4606860342.

The spelling of 12724516 in words is "twelve million, seven hundred twenty-four thousand, five hundred sixteen".