2271228 has 24 divisors (see below), whose sum is σ = 5413632. Its totient is φ = 740784.

The previous prime is 2271223. The next prime is 2271229. The reversal of 2271228 is 8221722.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2271198 and 2271207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2271221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1450 + ... + 2577.

It is an arithmetic number, because the mean of its divisors is an integer number (225568).

2^2271228 is an apocalyptic number.

It is an amenable number.

2271228 is an abundant number, since it is smaller than the sum of its proper divisors (3142404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2271228 is a wasteful number, since it uses less digits than its factorization.

2271228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4081 (or 4079 counting only the distinct ones).

The product of its digits is 896, while the sum is 24.

The square root of 2271228 is about 1507.0593883454. The cubic root of 2271228 is about 131.4478774862.

The spelling of 2271228 in words is "two million, two hundred seventy-one thousand, two hundred twenty-eight".