12457516 has 18 divisors (see below), whose sum is σ = 22094268. Its totient is φ = 6145920.

The previous prime is 12457499. The next prime is 12457519. The reversal of 12457516 is 61575421.

12457516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12457519) 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, 37471 + ... + 37801.

Almost surely, 2^12457516 is an apocalyptic number.

It is an amenable number.

12457516 is a deficient number, since it is larger than the sum of its proper divisors (9636752).

12457516 is an equidigital number, since it uses as much as digits as its factorization.

12457516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529 (or 430 counting only the distinct ones).

The product of its digits is 8400, while the sum is 31.

The square root of 12457516 is about 3529.5206473401. The cubic root of 12457516 is about 231.8162189015.

The spelling of 12457516 in words is "twelve million, four hundred fifty-seven thousand, five hundred sixteen".