2491916 has 12 divisors (see below), whose sum is σ = 4983888. Its totient is φ = 1067952.

The previous prime is 2491903. The next prime is 2491933. The reversal of 2491916 is 6191942.

2491916 is an admirable number.

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, 44471 + ... + 44526.

It is an arithmetic number, because the mean of its divisors is an integer number (415324).

2^2491916 is an apocalyptic number.

It is an amenable number.

2491916 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2491916 is a wasteful number, since it uses less digits than its factorization.

2491916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89008 (or 89006 counting only the distinct ones).

The product of its digits is 3888, while the sum is 32.

The square root of 2491916 is about 1578.5803748938. The cubic root of 2491916 is about 135.5744338524.

The spelling of 2491916 in words is "two million, four hundred ninety-one thousand, nine hundred sixteen".