2808231 has 8 divisors (see below), whose sum is σ = 3907200. Its totient is φ = 1790712.

The previous prime is 2808229. The next prime is 2808241. The reversal of 2808231 is 1328082.

2808231 = T₅₀ + T₅₁ + ... + T₂₅₆.

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

It is not a de Polignac number, because 2808231 - 2¹ = 2808229 is a prime.

It is a super-2 number, since 2×2808231² = 15772322698722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808241) 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 7 ways as a sum of consecutive naturals, for example, 20281 + ... + 20418.

It is an arithmetic number, because the mean of its divisors is an integer number (488400).

2^2808231 is an apocalyptic number.

2808231 is a deficient number, since it is larger than the sum of its proper divisors (1098969).

2808231 is a wasteful number, since it uses less digits than its factorization.

2808231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40725.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 2808231 is about 1675.7777298914. Note that the first 4 decimals coincide. The cubic root of 2808231 is about 141.0839498061.

The spelling of 2808231 in words is "two million, eight hundred eight thousand, two hundred thirty-one".