28365085 has 16 divisors (see below), whose sum is σ = 39081600. Its totient is φ = 19359936.

The previous prime is 28365083. The next prime is 28365089. The reversal of 28365085 is 58056382.

It is a cyclic number.

It is not a de Polignac number, because 28365085 - 2¹ = 28365083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28365083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6246 + ... + 9784.

It is an arithmetic number, because the mean of its divisors is an integer number (2442600).

Almost surely, 2^28365085 is an apocalyptic number.

It is an amenable number.

28365085 is a deficient number, since it is larger than the sum of its proper divisors (10716515).

28365085 is a wasteful number, since it uses less digits than its factorization.

28365085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3780.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 28365085 is about 5325.8881888376. Note that the first 3 decimals coincide. The cubic root of 28365085 is about 304.9729797796.

It can be divided in two parts, 2836 and 5085, that added together give a square (7921 = 89²).

The spelling of 28365085 in words is "twenty-eight million, three hundred sixty-five thousand, eighty-five".