2843280 has 120 divisors (see below), whose sum is σ = 10445760. Its totient is φ = 687360.

The previous prime is 2843273. The next prime is 2843287. The reversal of 2843280 is 823482.

It is an interprime number because it is at equal distance from previous prime (2843273) and next prime (2843287).

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (2843287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7741 + ... + 8099.

It is an arithmetic number, because the mean of its divisors is an integer number (87048).

2^2843280 is an apocalyptic number.

2843280 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 2843280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5222880).

2843280 is an abundant number, since it is smaller than the sum of its proper divisors (7602480).

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

2843280 is a wasteful number, since it uses less digits than its factorization.

2843280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389 (or 380 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 2843280 is about 1686.2028347740. The cubic root of 2843280 is about 141.6684721031.

The spelling of 2843280 in words is "two million, eight hundred forty-three thousand, two hundred eighty".