2257684 has 24 divisors (see below), whose sum is σ = 4642848. Its totient is φ = 947040.

The previous prime is 2257667. The next prime is 2257687. The reversal of 2257684 is 4867522.

It is a d-powerful number, because it can be written as 2⁵ + 2¹³ + 5⁹ + 7 + 6⁷ + 8 + 4⁷ .

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 7 ways as a sum of consecutive naturals, for example, 1402 + ... + 2545.

It is an arithmetic number, because the mean of its divisors is an integer number (193452).

2^2257684 is an apocalyptic number.

It is an amenable number.

2257684 is an abundant number, since it is smaller than the sum of its proper divisors (2385164).

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

2257684 is a wasteful number, since it uses less digits than its factorization.

2257684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3975 (or 3973 counting only the distinct ones).

The product of its digits is 26880, while the sum is 34.

The square root of 2257684 is about 1502.5591502500. The cubic root of 2257684 is about 131.1860689402.

The spelling of 2257684 in words is "two million, two hundred fifty-seven thousand, six hundred eighty-four".