2268881 has 6 divisors (see below), whose sum is σ = 2372370. Its totient is φ = 2169728.

The previous prime is 2268869. The next prime is 2268887. The reversal of 2268881 is 1888622.

2268881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 2235025 + 33856 = 1495^2 + 184^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2268881 is a prime.

It is a super-2 number, since 2×2268881² = 10295641984322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2268887) 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 5 ways as a sum of consecutive naturals, for example, 1616 + ... + 2673.

It is an arithmetic number, because the mean of its divisors is an integer number (395395).

2^2268881 is an apocalyptic number.

It is an amenable number.

2268881 is a deficient number, since it is larger than the sum of its proper divisors (103489).

2268881 is an equidigital number, since it uses as much as digits as its factorization.

2268881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4335 (or 4312 counting only the distinct ones).

The product of its digits is 12288, while the sum is 35.

The square root of 2268881 is about 1506.2805183630. The cubic root of 2268881 is about 131.4025841476.

The spelling of 2268881 in words is "two million, two hundred sixty-eight thousand, eight hundred eighty-one".