2789856 has 48 divisors (see below), whose sum is σ = 8139600. Its totient is φ = 929664.

The previous prime is 2789849. The next prime is 2789861. The reversal of 2789856 is 6589872.

It is a tau number, because it is divible by the number of its divisors (48).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 751 + ... + 2478.

It is an arithmetic number, because the mean of its divisors is an integer number (169575).

2^2789856 is an apocalyptic number.

It is an amenable number.

2789856 is an abundant number, since it is smaller than the sum of its proper divisors (5349744).

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

2789856 is a wasteful number, since it uses less digits than its factorization.

2789856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248 (or 3234 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 2789856 is about 1670.2862030203. The cubic root of 2789856 is about 140.7755596352.

The spelling of 2789856 in words is "two million, seven hundred eighty-nine thousand, eight hundred fifty-six".