2808442 has 24 divisors (see below), whose sum is σ = 5217696. Its totient is φ = 1110096.

The previous prime is 2808437. The next prime is 2808469. The reversal of 2808442 is 2448082.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 2808442.

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 11 ways as a sum of consecutive naturals, for example, 1773 + ... + 2959.

It is an arithmetic number, because the mean of its divisors is an integer number (217404).

2^2808442 is an apocalyptic number.

2808442 is a deficient number, since it is larger than the sum of its proper divisors (2409254).

2808442 is a wasteful number, since it uses less digits than its factorization.

2808442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222 (or 1209 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 2808442 is about 1675.8406845521. The cubic root of 2808442 is about 141.0874832248.

The spelling of 2808442 in words is "two million, eight hundred eight thousand, four hundred forty-two".