2804923 has 4 divisors (see below), whose sum is σ = 3059928. Its totient is φ = 2549920.

The previous prime is 2804917. The next prime is 2804927. The reversal of 2804923 is 3294082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2804923 - 2⁵ = 2804891 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2804891 and 2804900.

It is not an unprimeable number, because it can be changed into a prime (2804927) 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 3 ways as a sum of consecutive naturals, for example, 127486 + ... + 127507.

It is an arithmetic number, because the mean of its divisors is an integer number (764982).

2^2804923 is an apocalyptic number.

2804923 is a deficient number, since it is larger than the sum of its proper divisors (255005).

2804923 is a wasteful number, since it uses less digits than its factorization.

2804923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255004.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2804923 is about 1674.7904346515. The cubic root of 2804923 is about 141.0285306852.

The spelling of 2804923 in words is "two million, eight hundred four thousand, nine hundred twenty-three".