2031228 has 36 divisors (see below), whose sum is σ = 5438160. Its totient is φ = 637056.

The previous prime is 2031223. The next prime is 2031229. The reversal of 2031228 is 8221302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 2031228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1048 + ... + 2271.

It is an arithmetic number, because the mean of its divisors is an integer number (151060).

2^2031228 is an apocalyptic number.

It is an amenable number.

2031228 is an abundant number, since it is smaller than the sum of its proper divisors (3406932).

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

2031228 is a wasteful number, since it uses less digits than its factorization.

2031228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3346 (or 3341 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2031228 is about 1425.2115632425. The cubic root of 2031228 is about 126.6444682552.

It can be divided in two parts, 203 and 1228, that added together give a triangular number (1431 = T₅₃).

The spelling of 2031228 in words is "two million, thirty-one thousand, two hundred twenty-eight".