2268491 has 4 divisors (see below), whose sum is σ = 2307000. Its totient is φ = 2229984.

The previous prime is 2268481. The next prime is 2268503. The reversal of 2268491 is 1948622.

2268491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2268491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2268451) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19166 + ... + 19283.

It is an arithmetic number, because the mean of its divisors is an integer number (576750).

2^2268491 is an apocalyptic number.

2268491 is a deficient number, since it is larger than the sum of its proper divisors (38509).

2268491 is an equidigital number, since it uses as much as digits as its factorization.

2268491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38508.

The product of its digits is 6912, while the sum is 32.

The square root of 2268491 is about 1506.1510548414. The cubic root of 2268491 is about 131.3950547466.

The spelling of 2268491 in words is "two million, two hundred sixty-eight thousand, four hundred ninety-one".