12788415 has 32 divisors (see below), whose sum is σ = 23274240. Its totient is φ = 6658848.

The previous prime is 12788411. The next prime is 12788429. The reversal of 12788415 is 51488721.

It is not a de Polignac number, because 12788415 - 2² = 12788411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12788415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12788411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4704 + ... + 6906.

It is an arithmetic number, because the mean of its divisors is an integer number (727320).

Almost surely, 2^12788415 is an apocalyptic number.

12788415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12788415 is a deficient number, since it is larger than the sum of its proper divisors (10485825).

12788415 is a wasteful number, since it uses less digits than its factorization.

12788415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2260 (or 2254 counting only the distinct ones).

The product of its digits is 17920, while the sum is 36.

The square root of 12788415 is about 3576.0893445215. The cubic root of 12788415 is about 233.8508253687.

It can be divided in two parts, 12788 and 415, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 12788415 in words is "twelve million, seven hundred eighty-eight thousand, four hundred fifteen".