2491768 has 16 divisors (see below), whose sum is σ = 4691160. Its totient is φ = 1240800.

The previous prime is 2491759. The next prime is 2491777. The reversal of 2491768 is 8671942.

It is an interprime number because it is at equal distance from previous prime (2491759) and next prime (2491777).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2178 + ... + 3118.

2^2491768 is an apocalyptic number.

It is an amenable number.

2491768 is a deficient number, since it is larger than the sum of its proper divisors (2199392).

2491768 is a wasteful number, since it uses less digits than its factorization.

2491768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1278 (or 1274 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 2491768 is about 1578.5334966354. The cubic root of 2491768 is about 135.5717497847.

The spelling of 2491768 in words is "two million, four hundred ninety-one thousand, seven hundred sixty-eight".