2855844 has 48 divisors (see below), whose sum is σ = 7651840. Its totient is φ = 920160.

The previous prime is 2855843. The next prime is 2855851. The reversal of 2855844 is 4485582.

2855844 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2855799 and 2855808.

It is not an unprimeable number, because it can be changed into a prime (2855843) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2922 + ... + 3774.

2^2855844 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2855844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3825920).

2855844 is an abundant number, since it is smaller than the sum of its proper divisors (4795996).

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

2855844 is a wasteful number, since it uses less digits than its factorization.

2855844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897 (or 889 counting only the distinct ones).

The product of its digits is 51200, while the sum is 36.

The square root of 2855844 is about 1689.9242586578. The cubic root of 2855844 is about 141.8768356093.

The spelling of 2855844 in words is "two million, eight hundred fifty-five thousand, eight hundred forty-four".