2808018 has 24 divisors (see below), whose sum is σ = 6170268. Its totient is φ = 922752.

The previous prime is 2808017. The next prime is 2808023. The reversal of 2808018 is 8108082.

2808018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2634129 + 173889 = 1623^2 + 417^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2807982 and 2808000.

It is not an unprimeable number, because it can be changed into a prime (2808017) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 246 + ... + 2382.

2^2808018 is an apocalyptic number.

2808018 is an abundant number, since it is smaller than the sum of its proper divisors (3362250).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2808018 is a wasteful number, since it uses less digits than its factorization.

2808018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218 (or 2215 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 2808018 is about 1675.7141761052. The cubic root of 2808018 is about 141.0803827158.

The spelling of 2808018 in words is "two million, eight hundred eight thousand, eighteen".