2803220 has 24 divisors (see below), whose sum is σ = 6728064. Its totient is φ = 961056.

The previous prime is 2803201. The next prime is 2803253. The reversal of 2803220 is 223082.

It is a Cunningham number, because it is equal to 141³-1.

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, 9872 + ... + 10151.

It is an arithmetic number, because the mean of its divisors is an integer number (280336).

2^2803220 is an apocalyptic number.

2803220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2803220 is an abundant number, since it is smaller than the sum of its proper divisors (3924844).

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

2803220 is a wasteful number, since it uses less digits than its factorization.

2803220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20039 (or 20037 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2803220 is about 1674.2819356369. The cubic root of 2803220 is about 140.9999832336. Note that the first 4 decimals are identical.

The spelling of 2803220 in words is "two million, eight hundred three thousand, two hundred twenty".