2228891 has 8 divisors (see below), whose sum is σ = 2565600. Its totient is φ = 1896768.

The previous prime is 2228867. The next prime is 2228893. The reversal of 2228891 is 1988222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2228891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2228893) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26 + ... + 2111.

It is an arithmetic number, because the mean of its divisors is an integer number (320700).

2^2228891 is an apocalyptic number.

2228891 is a deficient number, since it is larger than the sum of its proper divisors (336709).

2228891 is a wasteful number, since it uses less digits than its factorization.

2228891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2293.

The product of its digits is 4608, while the sum is 32.

The square root of 2228891 is about 1492.9470854655. The cubic root of 2228891 is about 130.6259945896.

The spelling of 2228891 in words is "two million, two hundred twenty-eight thousand, eight hundred ninety-one".