28569522 has 16 divisors (see below), whose sum is σ = 57695040. Its totient is φ = 9430512.

The previous prime is 28569517. The next prime is 28569557. The reversal of 28569522 is 22596582.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22497 + ... + 23732.

It is an arithmetic number, because the mean of its divisors is an integer number (3605940).

Almost surely, 2^28569522 is an apocalyptic number.

28569522 is an abundant number, since it is smaller than the sum of its proper divisors (29125518).

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

28569522 is a wasteful number, since it uses less digits than its factorization.

28569522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46337.

The product of its digits is 86400, while the sum is 39.

The square root of 28569522 is about 5345.0464918464. The cubic root of 28569522 is about 305.7039085564.

The spelling of 28569522 in words is "twenty-eight million, five hundred sixty-nine thousand, five hundred twenty-two".