28102085 has 16 divisors (see below), whose sum is σ = 36892800. Its totient is φ = 20379840.

The previous prime is 28102051. The next prime is 28102103. The reversal of 28102085 is 58020182.

It is not a de Polignac number, because 28102085 - 2¹⁶ = 28036549 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, 32519 + ... + 33371.

It is an arithmetic number, because the mean of its divisors is an integer number (2305800).

Almost surely, 2^28102085 is an apocalyptic number.

It is an amenable number.

28102085 is a deficient number, since it is larger than the sum of its proper divisors (8790715).

28102085 is a wasteful number, since it uses less digits than its factorization.

28102085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 28102085 is about 5301.1399717419. The cubic root of 28102085 is about 304.0274855400.

The spelling of 28102085 in words is "twenty-eight million, one hundred two thousand, eighty-five".