28979536 has 20 divisors (see below), whose sum is σ = 56236852. Its totient is φ = 14466816.

The previous prime is 28979507. The next prime is 28979537. The reversal of 28979536 is 63597982.

It can be written as a sum of positive squares in 2 ways, for example, as 9265936 + 19713600 = 3044^2 + 4440^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28979536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28979537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14026 + ... + 15958.

Almost surely, 2^28979536 is an apocalyptic number.

It is an amenable number.

28979536 is a deficient number, since it is larger than the sum of its proper divisors (27257316).

28979536 is a wasteful number, since it uses less digits than its factorization.

28979536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878 (or 2872 counting only the distinct ones).

The product of its digits is 816480, while the sum is 49.

The square root of 28979536 is about 5383.2644371236. The cubic root of 28979536 is about 307.1593990215.

The spelling of 28979536 in words is "twenty-eight million, nine hundred seventy-nine thousand, five hundred thirty-six".