28551585 has 64 divisors (see below), whose sum is σ = 52254720. Its totient is φ = 13224960.

The previous prime is 28551571. The next prime is 28551617. The reversal of 28551585 is 58515582.

It is not a de Polignac number, because 28551585 - 2⁵ = 28551553 is a prime.

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 63 ways as a sum of consecutive naturals, for example, 343954 + ... + 344036.

It is an arithmetic number, because the mean of its divisors is an integer number (816480).

Almost surely, 2^28551585 is an apocalyptic number.

It is an amenable number.

28551585 is a deficient number, since it is larger than the sum of its proper divisors (23703135).

28551585 is a wasteful number, since it uses less digits than its factorization.

28551585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198.

The product of its digits is 80000, while the sum is 39.

The square root of 28551585 is about 5343.3683197025. The cubic root of 28551585 is about 305.6399177650.

The spelling of 28551585 in words is "twenty-eight million, five hundred fifty-one thousand, five hundred eighty-five".