2831808 has 112 divisors (see below), whose sum is σ = 8940800. Its totient is φ = 790272.

The previous prime is 2831791. The next prime is 2831839. The reversal of 2831808 is 8081382.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65835 + ... + 65877.

2^2831808 is an apocalyptic number.

2831808 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2831808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4470400).

2831808 is an abundant number, since it is smaller than the sum of its proper divisors (6108992).

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

2831808 is an equidigital number, since it uses as much as digits as its factorization.

2831808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 55 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 2831808 is about 1682.7976705475. The cubic root of 2831808 is about 141.4776817218.

The spelling of 2831808 in words is "two million, eight hundred thirty-one thousand, eight hundred eight".