2843920 has 40 divisors (see below), whose sum is σ = 6963840. Its totient is φ = 1077120.

The previous prime is 2843903. The next prime is 2843941. The reversal of 2843920 is 293482.

It is a tau number, because it is divible by the number of its divisors (40).

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, 585 + ... + 2455.

It is an arithmetic number, because the mean of its divisors is an integer number (174096).

2^2843920 is an apocalyptic number.

2843920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2843920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3481920).

2843920 is an abundant number, since it is smaller than the sum of its proper divisors (4119920).

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

2843920 is a wasteful number, since it uses less digits than its factorization.

2843920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903 (or 1897 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 2843920 is about 1686.3925996043. The cubic root of 2843920 is about 141.6791007925.

The spelling of 2843920 in words is "two million, eight hundred forty-three thousand, nine hundred twenty".