2787992 has 16 divisors (see below), whose sum is σ = 5277960. Its totient is φ = 1380544.

The previous prime is 2787977. The next prime is 2788007. The reversal of 2787992 is 2997872.

It is an interprime number because it is at equal distance from previous prime (2787977) and next prime (2788007).

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, 773 + ... + 2484.

2^2787992 is an apocalyptic number.

It is an amenable number.

2787992 is a deficient number, since it is larger than the sum of its proper divisors (2489968).

2787992 is a wasteful number, since it uses less digits than its factorization.

2787992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370 (or 3366 counting only the distinct ones).

The product of its digits is 127008, while the sum is 44.

The square root of 2787992 is about 1669.7281215815. The cubic root of 2787992 is about 140.7442002980.

The spelling of 2787992 in words is "two million, seven hundred eighty-seven thousand, nine hundred ninety-two".