2783980 has 12 divisors (see below), whose sum is σ = 5846400. Its totient is φ = 1113584.

The previous prime is 2783959. The next prime is 2783999. The reversal of 2783980 is 893872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69580 + ... + 69619.

It is an arithmetic number, because the mean of its divisors is an integer number (487200).

2^2783980 is an apocalyptic number.

2783980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2783980 is an abundant number, since it is smaller than the sum of its proper divisors (3062420).

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

2783980 is a wasteful number, since it uses less digits than its factorization.

2783980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139208 (or 139206 counting only the distinct ones).

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

The square root of 2783980 is about 1668.5262958671. The cubic root of 2783980 is about 140.6766562490.

The spelling of 2783980 in words is "two million, seven hundred eighty-three thousand, nine hundred eighty".