12785115 has 16 divisors (see below), whose sum is σ = 23378688. Its totient is φ = 5844576.

The previous prime is 12785107. The next prime is 12785131. The reversal of 12785115 is 51158721.

It is not a de Polignac number, because 12785115 - 2³ = 12785107 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 60777 + ... + 60986.

It is an arithmetic number, because the mean of its divisors is an integer number (1461168).

Almost surely, 2^12785115 is an apocalyptic number.

12785115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12785115 is a deficient number, since it is larger than the sum of its proper divisors (10593573).

12785115 is a wasteful number, since it uses less digits than its factorization.

12785115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121778.

The product of its digits is 2800, while the sum is 30.

The square root of 12785115 is about 3575.6279168840. The cubic root of 12785115 is about 233.8307088775.

The spelling of 12785115 in words is "twelve million, seven hundred eighty-five thousand, one hundred fifteen".