12804890 has 16 divisors (see below), whose sum is σ = 26341632. Its totient is φ = 4390224.

The previous prime is 12804877. The next prime is 12804907. The reversal of 12804890 is 9840821.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91394 + ... + 91533.

It is an arithmetic number, because the mean of its divisors is an integer number (1646352).

Almost surely, 2^12804890 is an apocalyptic number.

12804890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12804890 is an abundant number, since it is smaller than the sum of its proper divisors (13536742).

12804890 is a wasteful number, since it uses less digits than its factorization.

12804890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182941.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 12804890 is about 3578.3920970179. The cubic root of 12804890 is about 233.9512036952.

The spelling of 12804890 in words is "twelve million, eight hundred four thousand, eight hundred ninety".