2256216 has 16 divisors (see below), whose sum is σ = 5640600. Its totient is φ = 752064.

The previous prime is 2256197. The next prime is 2256217. The reversal of 2256216 is 6126522.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 94009 = 2256216 / (2 + 2 + 5 + 6 + 2 + 1 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256217) 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, 46981 + ... + 47028.

2^2256216 is an apocalyptic number.

It is an amenable number.

2256216 is an abundant number, since it is smaller than the sum of its proper divisors (3384384).

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

2256216 is a wasteful number, since it uses less digits than its factorization.

2256216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94018 (or 94014 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 2256216 is about 1502.0705709120. The cubic root of 2256216 is about 131.1576293380.

It can be divided in two parts, 22562 and 16, that added together give a triangular number (22578 = T₂₁₂).

The spelling of 2256216 in words is "two million, two hundred fifty-six thousand, two hundred sixteen".