1564228 has 6 divisors (see below), whose sum is σ = 2737406. Its totient is φ = 782112.

The previous prime is 1564183. The next prime is 1564237. The reversal of 1564228 is 8224651.

It can be written as a sum of positive squares in only one way, i.e., 1557504 + 6724 = 1248^2 + 82^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1564196 and 1564205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195525 + ... + 195532.

2^1564228 is an apocalyptic number.

It is an amenable number.

1564228 is a deficient number, since it is larger than the sum of its proper divisors (1173178).

1564228 is a wasteful number, since it uses less digits than its factorization.

1564228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391061 (or 391059 counting only the distinct ones).

The product of its digits is 3840, while the sum is 28.

The square root of 1564228 is about 1250.6910090026. The cubic root of 1564228 is about 116.0824819634.

Adding to 1564228 its reverse (8224651), we get a palindrome (9788879).

The spelling of 1564228 in words is "one million, five hundred sixty-four thousand, two hundred twenty-eight".