2256218 has 4 divisors (see below), whose sum is σ = 3384330. Its totient is φ = 1128108.

The previous prime is 2256217. The next prime is 2256227. The reversal of 2256218 is 8126522.

2256218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2093809 + 162409 = 1447^2 + 403^2 .

It is not an unprimeable number, because it can be changed into a prime (2256217) 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 as a sum of consecutive naturals, namely, 564053 + ... + 564056.

2^2256218 is an apocalyptic number.

2256218 is a deficient number, since it is larger than the sum of its proper divisors (1128112).

2256218 is a wasteful number, since it uses less digits than its factorization.

2256218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128111.

The product of its digits is 1920, while the sum is 26.

The square root of 2256218 is about 1502.0712366596. The cubic root of 2256218 is about 131.1576680925.

The spelling of 2256218 in words is "two million, two hundred fifty-six thousand, two hundred eighteen".