2808239 has 12 divisors (see below), whose sum is σ = 3294144. Its totient is φ = 2386944.

The previous prime is 2808229. The next prime is 2808241. The reversal of 2808239 is 9328082.

It is a happy number.

It is not a de Polignac number, because 2808239 - 2¹² = 2804143 is a prime.

It is a super-2 number, since 2×2808239² = 15772412562242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10799 + ... + 11055.

It is an arithmetic number, because the mean of its divisors is an integer number (274512).

2^2808239 is an apocalyptic number.

2808239 is a deficient number, since it is larger than the sum of its proper divisors (485905).

2808239 is a wasteful number, since it uses less digits than its factorization.

2808239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 487 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 2808239 is about 1675.7801168411. The cubic root of 2808239 is about 141.0840837778.

The spelling of 2808239 in words is "two million, eight hundred eight thousand, two hundred thirty-nine".