28986565 has 8 divisors (see below), whose sum is σ = 34823808. Its totient is φ = 23162640.

The previous prime is 28986563. The next prime is 28986583. The reversal of 28986565 is 56568982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28986565 - 2¹ = 28986563 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28986563) by changing a digit.

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, 2344 + ... + 7966.

It is an arithmetic number, because the mean of its divisors is an integer number (4352976).

Almost surely, 2^28986565 is an apocalyptic number.

It is an amenable number.

28986565 is a deficient number, since it is larger than the sum of its proper divisors (5837243).

28986565 is a wasteful number, since it uses less digits than its factorization.

28986565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6659.

The product of its digits is 1036800, while the sum is 49.

The square root of 28986565 is about 5383.9172541933. The cubic root of 28986565 is about 307.1842308992.

The spelling of 28986565 in words is "twenty-eight million, nine hundred eighty-six thousand, five hundred sixty-five".