2806940 has 24 divisors (see below), whose sum is σ = 5927040. Its totient is φ = 1116608.

The previous prime is 2806919. The next prime is 2806961. The reversal of 2806940 is 496082.

2806940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2806919) and next prime (2806961).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5621 + ... + 6099.

It is an arithmetic number, because the mean of its divisors is an integer number (246960).

2^2806940 is an apocalyptic number.

2806940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2806940 is an abundant number, since it is smaller than the sum of its proper divisors (3120100).

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

2806940 is a wasteful number, since it uses less digits than its factorization.

2806940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 781 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2806940 is about 1675.3924913285. The cubic root of 2806940 is about 141.0623267871.

The spelling of 2806940 in words is "two million, eight hundred six thousand, nine hundred forty".