2228865 has 16 divisors (see below), whose sum is σ = 3595200. Its totient is φ = 1179072.

The previous prime is 2228813. The next prime is 2228867. The reversal of 2228865 is 5688222.

It is not a de Polignac number, because 2228865 - 2¹¹ = 2226817 is a prime.

It is a d-powerful number, because it can be written as 2² + 2¹⁷ + 2²¹ + 8² + 8³ + 6² + 5² .

2228865 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2228867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1551 + ... + 2619.

It is an arithmetic number, because the mean of its divisors is an integer number (224700).

2^2228865 is an apocalyptic number.

It is an amenable number.

2228865 is a deficient number, since it is larger than the sum of its proper divisors (1366335).

2228865 is a wasteful number, since it uses less digits than its factorization.

2228865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216.

The product of its digits is 15360, while the sum is 33.

The square root of 2228865 is about 1492.9383778308. The cubic root of 2228865 is about 130.6254866705.

The spelling of 2228865 in words is "two million, two hundred twenty-eight thousand, eight hundred sixty-five".