12804895 has 4 divisors (see below), whose sum is σ = 15365880. Its totient is φ = 10243912.

The previous prime is 12804877. The next prime is 12804907. The reversal of 12804895 is 59840821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 59840821 = 43 ⋅1391647.

It is a cyclic number.

It is not a de Polignac number, because 12804895 - 2¹³ = 12796703 is a prime.

It is a super-2 number, since 2×12804895² = 327930671922050, which contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 1280485 + ... + 1280494.

It is an arithmetic number, because the mean of its divisors is an integer number (3841470).

Almost surely, 2^12804895 is an apocalyptic number.

12804895 is a deficient number, since it is larger than the sum of its proper divisors (2560985).

12804895 is an equidigital number, since it uses as much as digits as its factorization.

12804895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2560984.

The product of its (nonzero) digits is 23040, while the sum is 37.

The square root of 12804895 is about 3578.3927956556. The cubic root of 12804895 is about 233.9512341459.

It can be divided in two parts, 1 and 2804895, that added together give a triangular number (2804896 = T₂₃₆₈).

The spelling of 12804895 in words is "twelve million, eight hundred four thousand, eight hundred ninety-five".