28522856 has 32 divisors (see below), whose sum is σ = 55342440. Its totient is φ = 13771008.

The previous prime is 28522853. The next prime is 28522861. The reversal of 28522856 is 65822582.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27730756 + 792100 = 5266^2 + 890^2 .

It is not an unprimeable number, because it can be changed into a prime (28522853) 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 7 ways as a sum of consecutive naturals, for example, 50930 + ... + 51486.

Almost surely, 2^28522856 is an apocalyptic number.

It is an amenable number.

28522856 is a deficient number, since it is larger than the sum of its proper divisors (26819584).

28522856 is a wasteful number, since it uses less digits than its factorization.

28522856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773 (or 769 counting only the distinct ones).

The product of its digits is 76800, while the sum is 38.

The square root of 28522856 is about 5340.6793575350. The cubic root of 28522856 is about 305.5373703239.

The spelling of 28522856 in words is "twenty-eight million, five hundred twenty-two thousand, eight hundred fifty-six".