28559956 has 24 divisors (see below), whose sum is σ = 51586976. Its totient is φ = 13828320.

The previous prime is 28559941. The next prime is 28559969. The reversal of 28559956 is 65995582.

It is a congruent number.

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, 15475 + ... + 17221.

Almost surely, 2^28559956 is an apocalyptic number.

It is an amenable number.

28559956 is a deficient number, since it is larger than the sum of its proper divisors (23027020).

28559956 is a wasteful number, since it uses less digits than its factorization.

28559956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879 (or 1877 counting only the distinct ones).

The product of its digits is 972000, while the sum is 49.

The square root of 28559956 is about 5344.1515697068. The cubic root of 28559956 is about 305.6697848955.

The spelling of 28559956 in words is "twenty-eight million, five hundred fifty-nine thousand, nine hundred fifty-six".