2256220 has 24 divisors (see below), whose sum is σ = 4791024. Its totient is φ = 892416.

The previous prime is 2256217. The next prime is 2256227. The reversal of 2256220 is 226522.

2256220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1359 + ... + 2521.

It is an arithmetic number, because the mean of its divisors is an integer number (199626).

2^2256220 is an apocalyptic number.

2256220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2256220 is an abundant number, since it is smaller than the sum of its proper divisors (2534804).

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

2256220 is a wasteful number, since it uses less digits than its factorization.

2256220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269 (or 1267 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2256220 is about 1502.0719024068. The cubic root of 2256220 is about 131.1577068469.

The spelling of 2256220 in words is "two million, two hundred fifty-six thousand, two hundred twenty".