2268638 has 16 divisors (see below), whose sum is σ = 3611520. Its totient is φ = 1065816.

The previous prime is 2268631. The next prime is 2268647. The reversal of 2268638 is 8368622.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 2268598 and 2268607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2268631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8495 + ... + 8757.

It is an arithmetic number, because the mean of its divisors is an integer number (225720).

2^2268638 is an apocalyptic number.

2268638 is a deficient number, since it is larger than the sum of its proper divisors (1342882).

2268638 is a wasteful number, since it uses less digits than its factorization.

2268638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511.

The product of its digits is 27648, while the sum is 35.

The square root of 2268638 is about 1506.1998539371. The cubic root of 2268638 is about 131.3978928529.

The spelling of 2268638 in words is "two million, two hundred sixty-eight thousand, six hundred thirty-eight".