2190256 has 20 divisors (see below), whose sum is σ = 4266592. Its totient is φ = 1089216.

The previous prime is 2190233. The next prime is 2190269. The reversal of 2190256 is 6520912.

It is a self number, because there is not a number n which added to its sum of digits gives 2190256.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5686 + ... + 6058.

2^2190256 is an apocalyptic number.

It is an amenable number.

2190256 is a deficient number, since it is larger than the sum of its proper divisors (2076336).

2190256 is a wasteful number, since it uses less digits than its factorization.

2190256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2190256 is about 1479.9513505518. The cubic root of 2190256 is about 129.8668459104.

The spelling of 2190256 in words is "two million, one hundred ninety thousand, two hundred fifty-six".