2823240 has 64 divisors (see below), whose sum is σ = 9682560. Its totient is φ = 645120.

The previous prime is 2823221. The next prime is 2823269. The reversal of 2823240 is 423282.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 841 + ... + 2520.

It is an arithmetic number, because the mean of its divisors is an integer number (151290).

2^2823240 is an apocalyptic number.

2823240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2823240 is an abundant number, since it is smaller than the sum of its proper divisors (6859320).

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

2823240 is a wasteful number, since it uses less digits than its factorization.

2823240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382 (or 3378 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 2823240 is about 1680.2499814016. The cubic root of 2823240 is about 141.3348512554.

The spelling of 2823240 in words is "two million, eight hundred twenty-three thousand, two hundred forty".