28563842 has 16 divisors (see below), whose sum is σ = 46046880. Its totient is φ = 13240128.

The previous prime is 28563823. The next prime is 28563853. The reversal of 28563842 is 24836582.

It is a junction number, because it is equal to n+sod(n) for n = 28563796 and 28563805.

It is an unprimeable number.

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, 3992 + ... + 8547.

It is an arithmetic number, because the mean of its divisors is an integer number (2877930).

Almost surely, 2^28563842 is an apocalyptic number.

28563842 is a deficient number, since it is larger than the sum of its proper divisors (17483038).

28563842 is a wasteful number, since it uses less digits than its factorization.

28563842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12625.

The product of its digits is 92160, while the sum is 38.

The square root of 28563842 is about 5344.5151323577. The cubic root of 28563842 is about 305.6836478828.

The spelling of 28563842 in words is "twenty-eight million, five hundred sixty-three thousand, eight hundred forty-two".