2257806 has 16 divisors (see below), whose sum is σ = 4552704. Its totient is φ = 746424.

The previous prime is 2257799. The next prime is 2257813. The reversal of 2257806 is 6087522.

2257806 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2257799) and next prime (2257813).

It is a congruent number.

It is an unprimeable number.

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, 720 + ... + 2243.

It is an arithmetic number, because the mean of its divisors is an integer number (284544).

2^2257806 is an apocalyptic number.

2257806 is an abundant number, since it is smaller than the sum of its proper divisors (2294898).

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

2257806 is a wasteful number, since it uses less digits than its factorization.

2257806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 2257806 is about 1502.5997471050. The cubic root of 2257806 is about 131.1884318945.

The spelling of 2257806 in words is "two million, two hundred fifty-seven thousand, eight hundred six".