2261889 has 36 divisors (see below), whose sum is σ = 3983616. Its totient is φ = 1230768.

The previous prime is 2261887. The next prime is 2261891. The reversal of 2261889 is 9881622.

It is an interprime number because it is at equal distance from previous prime (2261887) and next prime (2261891).

It is not a de Polignac number, because 2261889 - 2¹ = 2261887 is a prime.

It is a super-2 number, since 2×2261889² = 10232283696642, which contains 22 as substring.

Its product of digits (13824) is a multiple of the sum of its prime divisors (256).

It is not an unprimeable number, because it can be changed into a prime (2261887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 10032 + ... + 10254.

It is an arithmetic number, because the mean of its divisors is an integer number (110656).

2^2261889 is an apocalyptic number.

It is an amenable number.

2261889 is a deficient number, since it is larger than the sum of its proper divisors (1721727).

2261889 is a wasteful number, since it uses less digits than its factorization.

2261889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 256 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 2261889 is about 1503.9577786627. The cubic root of 2261889 is about 131.2674643427.

The spelling of 2261889 in words is "two million, two hundred sixty-one thousand, eight hundred eighty-nine".