12804915 has 32 divisors (see below), whose sum is σ = 21482496. Its totient is φ = 6506240.

The previous prime is 12804907. The next prime is 12804919. The reversal of 12804915 is 51940821.

It is a happy number.

12804915 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 12804915 - 2³ = 12804907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12804919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28684 + ... + 29126.

It is an arithmetic number, because the mean of its divisors is an integer number (671328).

Almost surely, 2^12804915 is an apocalyptic number.

12804915 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12804915 is a deficient number, since it is larger than the sum of its proper divisors (8677581).

12804915 is a wasteful number, since it uses less digits than its factorization.

12804915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 12804915 is about 3578.3955902052. The cubic root of 12804915 is about 233.9513559489.

The spelling of 12804915 in words is "twelve million, eight hundred four thousand, nine hundred fifteen".