2257688 has 16 divisors (see below), whose sum is σ = 4254360. Its totient is φ = 1123200.

The previous prime is 2257687. The next prime is 2257691. The reversal of 2257688 is 8867522.

It is a d-powerful number, because it can be written as 2 + 2¹⁴ + 5⁹ + 7² + 6⁷ + 8⁴ + 8⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1343 + ... + 2513.

2^2257688 is an apocalyptic number.

It is an amenable number.

2257688 is a deficient number, since it is larger than the sum of its proper divisors (1996672).

2257688 is a wasteful number, since it uses less digits than its factorization.

2257688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1418 (or 1414 counting only the distinct ones).

The product of its digits is 53760, while the sum is 38.

The square root of 2257688 is about 1502.5604813118. The cubic root of 2257688 is about 131.1861464155.

The spelling of 2257688 in words is "two million, two hundred fifty-seven thousand, six hundred eighty-eight".