2263220 has 12 divisors (see below), whose sum is σ = 4752804. Its totient is φ = 905280.

The previous prime is 2263213. The next prime is 2263229. The reversal of 2263220 is 223622.

It can be written as a sum of positive squares in 2 ways, for example, as 1449616 + 813604 = 1204^2 + 902^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2263229) 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, 56561 + ... + 56600.

It is an arithmetic number, because the mean of its divisors is an integer number (396067).

2^2263220 is an apocalyptic number.

2263220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2263220 is an abundant number, since it is smaller than the sum of its proper divisors (2489584).

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

2263220 is a wasteful number, since it uses less digits than its factorization.

2263220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113170 (or 113168 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 2263220 is about 1504.4002127094. The cubic root of 2263220 is about 131.2932072411.

Adding to 2263220 its reverse (223622), we get a palindrome (2486842).

The spelling of 2263220 in words is "two million, two hundred sixty-three thousand, two hundred twenty".