28825828 has 24 divisors (see below), whose sum is σ = 51243192. Its totient is φ = 14187264.

The previous prime is 28825801. The next prime is 28825843. The reversal of 28825828 is 82852882.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5419584 + 23406244 = 2328^2 + 4838^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123600 + ... + 123832.

It is an arithmetic number, because the mean of its divisors is an integer number (2135133).

Almost surely, 2^28825828 is an apocalyptic number.

It is an amenable number.

28825828 is a deficient number, since it is larger than the sum of its proper divisors (22417364).

28825828 is a wasteful number, since it uses less digits than its factorization.

28825828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 589 counting only the distinct ones).

The product of its digits is 163840, while the sum is 43.

The square root of 28825828 is about 5368.9689885489. The cubic root of 28825828 is about 306.6153763202.

The spelling of 28825828 in words is "twenty-eight million, eight hundred twenty-five thousand, eight hundred twenty-eight".