12748715 has 24 divisors (see below), whose sum is σ = 18470880. Its totient is φ = 8273664.

The previous prime is 12748711. The next prime is 12748733. The reversal of 12748715 is 51784721.

12748715 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12748715 - 2² = 12748711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12748711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12131 + ... + 13139.

It is an arithmetic number, because the mean of its divisors is an integer number (769620).

Almost surely, 2^12748715 is an apocalyptic number.

12748715 is a deficient number, since it is larger than the sum of its proper divisors (5722165).

12748715 is a wasteful number, since it uses less digits than its factorization.

12748715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059 (or 1040 counting only the distinct ones).

The product of its digits is 15680, while the sum is 35.

The square root of 12748715 is about 3570.5342737467. The cubic root of 12748715 is about 233.6085878633.

The spelling of 12748715 in words is "twelve million, seven hundred forty-eight thousand, seven hundred fifteen".