2843856 has 80 divisors (see below), whose sum is σ = 8481600. Its totient is φ = 911232.

The previous prime is 2843851. The next prime is 2843873. The reversal of 2843856 is 6583482.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2843856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2843851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12415 + ... + 12641.

It is an arithmetic number, because the mean of its divisors is an integer number (106020).

2^2843856 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 2843856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4240800).

2843856 is an abundant number, since it is smaller than the sum of its proper divisors (5637744).

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

2843856 is a wasteful number, since it uses less digits than its factorization.

2843856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 261 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 2843856 is about 1686.3736240822. The cubic root of 2843856 is about 141.6780379953.

The spelling of 2843856 in words is "two million, eight hundred forty-three thousand, eight hundred fifty-six".