2228681 has 16 divisors (see below), whose sum is σ = 2889600. Its totient is φ = 1669248.

The previous prime is 2228663. The next prime is 2228687. The reversal of 2228681 is 1868222.

It is not a de Polignac number, because 2228681 - 2¹⁰ = 2227657 is a prime.

It is a super-2 number, since 2×2228681² = 9934037999522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2228687) 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 15 ways as a sum of consecutive naturals, for example, 1085 + ... + 2373.

It is an arithmetic number, because the mean of its divisors is an integer number (180600).

2^2228681 is an apocalyptic number.

It is an amenable number.

2228681 is a deficient number, since it is larger than the sum of its proper divisors (660919).

2228681 is a wasteful number, since it uses less digits than its factorization.

2228681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328.

The product of its digits is 3072, while the sum is 29.

The square root of 2228681 is about 1492.8767531180. The cubic root of 2228681 is about 130.6218920531.

The spelling of 2228681 in words is "two million, two hundred twenty-eight thousand, six hundred eighty-one".