1563228 has 36 divisors (see below), whose sum is σ = 3990168. Its totient is φ = 516000.

The previous prime is 1563227. The next prime is 1563229. The reversal of 1563228 is 8223651.

1563228 is a `hidden beast` number, since 1 + 5 + 632 + 28 = 666.

It is an interprime number because it is at equal distance from previous prime (1563227) and next prime (1563229).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1563227) 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 11 ways as a sum of consecutive naturals, for example, 6103 + ... + 6353.

It is an arithmetic number, because the mean of its divisors is an integer number (110838).

2^1563228 is an apocalyptic number.

1563228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1563228 is an abundant number, since it is smaller than the sum of its proper divisors (2426940).

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

1563228 is a wasteful number, since it uses less digits than its factorization.

1563228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 429 counting only the distinct ones).

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

The square root of 1563228 is about 1250.2911660889. The cubic root of 1563228 is about 116.0577397844.

Adding to 1563228 its reverse (8223651), we get a palindrome (9786879).

The spelling of 1563228 in words is "one million, five hundred sixty-three thousand, two hundred twenty-eight".