28260285 has 16 divisors (see below), whose sum is σ = 45435840. Its totient is φ = 14999040.

The previous prime is 28260269. The next prime is 28260311. The reversal of 28260285 is 58206282.

It is not a de Polignac number, because 28260285 - 2⁴ = 28260269 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, 1300 + ... + 7629.

It is an arithmetic number, because the mean of its divisors is an integer number (2839740).

Almost surely, 2^28260285 is an apocalyptic number.

It is an amenable number.

28260285 is a deficient number, since it is larger than the sum of its proper divisors (17175555).

28260285 is a wasteful number, since it uses less digits than its factorization.

28260285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9148.

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 28260285 is about 5316.0403497340. The cubic root of 28260285 is about 304.5969234248.

The spelling of 28260285 in words is "twenty-eight million, two hundred sixty thousand, two hundred eighty-five".