12864788 has 6 divisors (see below), whose sum is σ = 22513386. Its totient is φ = 6432392.

The previous prime is 12864763. The next prime is 12864791. The reversal of 12864788 is 88746821.

It can be written as a sum of positive squares in only one way, i.e., 9412624 + 3452164 = 3068^2 + 1858^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608095 + ... + 1608102.

It is an arithmetic number, because the mean of its divisors is an integer number (3752231).

Almost surely, 2^12864788 is an apocalyptic number.

It is an amenable number.

12864788 is a deficient number, since it is larger than the sum of its proper divisors (9648598).

12864788 is a wasteful number, since it uses less digits than its factorization.

12864788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216201 (or 3216199 counting only the distinct ones).

The product of its digits is 172032, while the sum is 44.

The square root of 12864788 is about 3586.7517338115. The cubic root of 12864788 is about 234.3154243363.

The spelling of 12864788 in words is "twelve million, eight hundred sixty-four thousand, seven hundred eighty-eight".