12768515 has 8 divisors (see below), whose sum is σ = 15736560. Its totient is φ = 9938592.

The previous prime is 12768493. The next prime is 12768517. The reversal of 12768515 is 51586721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12768515 - 2⁶ = 12768451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12768517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34325 + ... + 34694.

It is an arithmetic number, because the mean of its divisors is an integer number (1967070).

Almost surely, 2^12768515 is an apocalyptic number.

12768515 is a deficient number, since it is larger than the sum of its proper divisors (2968045).

12768515 is an equidigital number, since it uses as much as digits as its factorization.

12768515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69061.

The product of its digits is 16800, while the sum is 35.

The square root of 12768515 is about 3573.3058923076. The cubic root of 12768515 is about 233.7294642945.

The spelling of 12768515 in words is "twelve million, seven hundred sixty-eight thousand, five hundred fifteen".