28985536 has 28 divisors (see below), whose sum is σ = 57726072. Its totient is φ = 14440448.

The previous prime is 28985533. The next prime is 28985549. The reversal of 28985536 is 63558982.

It is a super-3 number, since 3×28985536³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (28985533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21951 + ... + 23233.

Almost surely, 2^28985536 is an apocalyptic number.

It is an amenable number.

28985536 is a deficient number, since it is larger than the sum of its proper divisors (28740536).

28985536 is a wasteful number, since it uses less digits than its factorization.

28985536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1648 (or 1638 counting only the distinct ones).

The product of its digits is 518400, while the sum is 46.

The square root of 28985536 is about 5383.8216909552. The cubic root of 28985536 is about 307.1805959243.

The spelling of 28985536 in words is "twenty-eight million, nine hundred eighty-five thousand, five hundred thirty-six".