3156228 has 36 divisors (see below), whose sum is σ = 8094268. Its totient is φ = 1036800.

The previous prime is 3156227. The next prime is 3156239. The reversal of 3156228 is 8226513.

3156228 is a `hidden beast` number, since 31 + 5 + 622 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 589824 + 2566404 = 768^2 + 1602^2 .

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

It is not an unprimeable number, because it can be changed into a prime (3156227) 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, 2028 + ... + 3228.

Almost surely, 2^3156228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3156228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4047134).

3156228 is an abundant number, since it is smaller than the sum of its proper divisors (4938040).

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

3156228 is a wasteful number, since it uses less digits than its factorization.

3156228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284 (or 1279 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 3156228 is about 1776.5776087748. The cubic root of 3156228 is about 146.6862668939.

The spelling of 3156228 in words is "three million, one hundred fifty-six thousand, two hundred twenty-eight".