2783998 has 16 divisors (see below), whose sum is σ = 4875264. Its totient is φ = 1167480.

The previous prime is 2783959. The next prime is 2783999. The reversal of 2783998 is 8993872.

It is a super-3 number, since 3×2783998³ = 64733339400292223976, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2783999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1458 + ... + 2773.

It is an arithmetic number, because the mean of its divisors is an integer number (304704).

2^2783998 is an apocalyptic number.

2783998 is a deficient number, since it is larger than the sum of its proper divisors (2091266).

2783998 is a wasteful number, since it uses less digits than its factorization.

2783998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4287.

The product of its digits is 217728, while the sum is 46.

The square root of 2783998 is about 1668.5316898399. The cubic root of 2783998 is about 140.6769594329.

The spelling of 2783998 in words is "two million, seven hundred eighty-three thousand, nine hundred ninety-eight".