2841856 has 36 divisors (see below), whose sum is σ = 6015492. Its totient is φ = 1335296.

The previous prime is 2841851. The next prime is 2841869. The reversal of 2841856 is 6581482.

It can be written as a sum of positive squares in 2 ways, for example, as 1440000 + 1401856 = 1200^2 + 1184^2 .

It is a super-2 number, since 2×2841856² = 16152291049472, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2841851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4026 + ... + 4678.

It is an arithmetic number, because the mean of its divisors is an integer number (167097).

2^2841856 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 2841856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3007746).

2841856 is an abundant number, since it is smaller than the sum of its proper divisors (3173636).

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

2841856 is an equidigital number, since it uses as much as digits as its factorization.

2841856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686 (or 672 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 2841856 is about 1685.7805313860. The cubic root of 2841856 is about 141.6448175454.

The spelling of 2841856 in words is "two million, eight hundred forty-one thousand, eight hundred fifty-six".