2256916 has 6 divisors (see below), whose sum is σ = 3949610. Its totient is φ = 1128456.

The previous prime is 2256913. The next prime is 2256923. The reversal of 2256916 is 6196522.

It can be written as a sum of positive squares in only one way, i.e., 2131600 + 125316 = 1460^2 + 354^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282111 + ... + 282118.

2^2256916 is an apocalyptic number.

It is an amenable number.

2256916 is a deficient number, since it is larger than the sum of its proper divisors (1692694).

2256916 is a wasteful number, since it uses less digits than its factorization.

2256916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564233 (or 564231 counting only the distinct ones).

The product of its digits is 6480, while the sum is 31.

The square root of 2256916 is about 1502.3035645302. The cubic root of 2256916 is about 131.1711919944.

The spelling of 2256916 in words is "two million, two hundred fifty-six thousand, nine hundred sixteen".