28159536 has 40 divisors (see below), whose sum is σ = 74124720. Its totient is φ = 9208576.

The previous prime is 28159519. The next prime is 28159541. The reversal of 28159536 is 63595182.

It is a junction number, because it is equal to n+sod(n) for n = 28159494 and 28159503.

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, 2991 + ... + 8078.

It is an arithmetic number, because the mean of its divisors is an integer number (1853118).

Almost surely, 2^28159536 is an apocalyptic number.

It is an amenable number.

28159536 is an abundant number, since it is smaller than the sum of its proper divisors (45965184).

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

28159536 is a wasteful number, since it uses less digits than its factorization.

28159536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11133 (or 11127 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 28159536 is about 5306.5559452436. Note that the first 3 decimals coincide. The cubic root of 28159536 is about 304.2345258575.

The spelling of 28159536 in words is "twenty-eight million, one hundred fifty-nine thousand, five hundred thirty-six".