28511085 has 16 divisors (see below), whose sum is σ = 46479744. Its totient is φ = 14918592.

The previous prime is 28511071. The next prime is 28511117. The reversal of 28511085 is 58011582.

It is not a de Polignac number, because 28511085 - 2¹³ = 28502893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17137 + ... + 18726.

It is an arithmetic number, because the mean of its divisors is an integer number (2904984).

Almost surely, 2^28511085 is an apocalyptic number.

It is an amenable number.

28511085 is a deficient number, since it is larger than the sum of its proper divisors (17968659).

28511085 is a wasteful number, since it uses less digits than its factorization.

28511085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35924.

The product of its (nonzero) digits is 3200, while the sum is 30.

The square root of 28511085 is about 5339.5772304556. The cubic root of 28511085 is about 305.4953341496.

The spelling of 28511085 in words is "twenty-eight million, five hundred eleven thousand, eighty-five".