3928228 has 6 divisors (see below), whose sum is σ = 6874406. Its totient is φ = 1964112.

The previous prime is 3928189. The next prime is 3928229. The reversal of 3928228 is 8228293.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3655744 + 272484 = 1912^2 + 522^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3928193 and 3928202.

It is not an unprimeable number, because it can be changed into a prime (3928229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 491025 + ... + 491032.

Almost surely, 2^3928228 is an apocalyptic number.

It is an amenable number.

3928228 is a deficient number, since it is larger than the sum of its proper divisors (2946178).

3928228 is a wasteful number, since it uses less digits than its factorization.

3928228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982061 (or 982059 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 3928228 is about 1981.9757818904. The cubic root of 3928228 is about 157.7849448279.

The spelling of 3928228 in words is "three million, nine hundred twenty-eight thousand, two hundred twenty-eight".