28969566 has 16 divisors (see below), whose sum is σ = 60988800. Its totient is φ = 9148248.

The previous prime is 28969553. The next prime is 28969583. The reversal of 28969566 is 66596982.

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, 126946 + ... + 127173.

It is an arithmetic number, because the mean of its divisors is an integer number (3811800).

Almost surely, 2^28969566 is an apocalyptic number.

28969566 is an abundant number, since it is smaller than the sum of its proper divisors (32019234).

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

28969566 is a wasteful number, since it uses less digits than its factorization.

28969566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254143.

The product of its digits is 1399680, while the sum is 51.

The square root of 28969566 is about 5382.3383394209. The cubic root of 28969566 is about 307.1241703638.

The spelling of 28969566 in words is "twenty-eight million, nine hundred sixty-nine thousand, five hundred sixty-six".