2491808 has 24 divisors (see below), whose sum is σ = 5352480. Its totient is φ = 1132480.

The previous prime is 2491787. The next prime is 2491813. The reversal of 2491808 is 8081942.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3188 + ... + 3891.

It is an arithmetic number, because the mean of its divisors is an integer number (223020).

2^2491808 is an apocalyptic number.

It is an amenable number.

2491808 is an abundant number, since it is smaller than the sum of its proper divisors (2860672).

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

2491808 is a wasteful number, since it uses less digits than its factorization.

2491808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100 (or 7092 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 2491808 is about 1578.5461665723. The cubic root of 2491808 is about 135.5724752189.

The spelling of 2491808 in words is "two million, four hundred ninety-one thousand, eight hundred eight".