2808993 has 8 divisors (see below), whose sum is σ = 4085856. Its totient is φ = 1702400.

The previous prime is 2808983. The next prime is 2808997. The reversal of 2808993 is 3998082.

2808993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2808993 - 2⁴ = 2808977 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2808997) 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 7 ways as a sum of consecutive naturals, for example, 42528 + ... + 42593.

It is an arithmetic number, because the mean of its divisors is an integer number (510732).

2^2808993 is an apocalyptic number.

It is an amenable number.

2808993 is a deficient number, since it is larger than the sum of its proper divisors (1276863).

2808993 is a wasteful number, since it uses less digits than its factorization.

2808993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85135.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 2808993 is about 1676.0050715914. The cubic root of 2808993 is about 141.0967094696.

It can be divided in two parts, 28089 and 93, that added together give a palindrome (28182).

The spelling of 2808993 in words is "two million, eight hundred eight thousand, nine hundred ninety-three".