12740515 has 4 divisors (see below), whose sum is σ = 15288624. Its totient is φ = 10192408.

The previous prime is 12740503. The next prime is 12740549. The reversal of 12740515 is 51504721.

12740515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51504721 = 337 ⋅152833.

It is a cyclic number.

It is not a de Polignac number, because 12740515 - 2⁹ = 12740003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12740515.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1274047 + ... + 1274056.

It is an arithmetic number, because the mean of its divisors is an integer number (3822156).

Almost surely, 2^12740515 is an apocalyptic number.

12740515 is a deficient number, since it is larger than the sum of its proper divisors (2548109).

12740515 is an equidigital number, since it uses as much as digits as its factorization.

12740515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2548108.

The product of its (nonzero) digits is 1400, while the sum is 25.

The square root of 12740515 is about 3569.3858015070. The cubic root of 12740515 is about 233.5584912779.

The spelling of 12740515 in words is "twelve million, seven hundred forty thousand, five hundred fifteen".