2268921 has 12 divisors (see below), whose sum is σ = 3129936. Its totient is φ = 1461960.

The previous prime is 2268919. The next prime is 2268941. The reversal of 2268921 is 1298622.

It is not a de Polignac number, because 2268921 - 2¹ = 2268919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2268941) 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 11 ways as a sum of consecutive naturals, for example, 2490 + ... + 3276.

It is an arithmetic number, because the mean of its divisors is an integer number (260828).

2^2268921 is an apocalyptic number.

It is an amenable number.

2268921 is a deficient number, since it is larger than the sum of its proper divisors (861015).

2268921 is an equidigital number, since it uses as much as digits as its factorization.

2268921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852 (or 821 counting only the distinct ones).

The product of its digits is 3456, while the sum is 30.

The square root of 2268921 is about 1506.2937960438. The cubic root of 2268921 is about 131.4033563451.

Subtracting from 2268921 its reverse (1298622), we obtain a cube (970299 = 99³).

The spelling of 2268921 in words is "two million, two hundred sixty-eight thousand, nine hundred twenty-one".