2257856 has 14 divisors (see below), whose sum is σ = 4480560. Its totient is φ = 1128896.

The previous prime is 2257837. The next prime is 2257859. The reversal of 2257856 is 6587522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17576 + ... + 17703.

It is an arithmetic number, because the mean of its divisors is an integer number (320040).

2^2257856 is an apocalyptic number.

It is an amenable number.

2257856 is a deficient number, since it is larger than the sum of its proper divisors (2222704).

2257856 is an equidigital number, since it uses as much as digits as its factorization.

2257856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35291 (or 35281 counting only the distinct ones).

The product of its digits is 33600, while the sum is 35.

The square root of 2257856 is about 1502.6163848435. The cubic root of 2257856 is about 131.1894002938.

It can be divided in two parts, 2257 and 856, that added together give a palindrome (3113).

The spelling of 2257856 in words is "two million, two hundred fifty-seven thousand, eight hundred fifty-six".