28986285 has 32 divisors (see below), whose sum is σ = 47854080. Its totient is φ = 14976000.

The previous prime is 28986253. The next prime is 28986301. The reversal of 28986285 is 58268982.

It is not a de Polignac number, because 28986285 - 2⁵ = 28986253 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72085 + ... + 72485.

It is an arithmetic number, because the mean of its divisors is an integer number (1495440).

Almost surely, 2^28986285 is an apocalyptic number.

It is an amenable number.

28986285 is a deficient number, since it is larger than the sum of its proper divisors (18867795).

28986285 is a wasteful number, since it uses less digits than its factorization.

28986285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549.

The product of its digits is 552960, while the sum is 48.

The square root of 28986285 is about 5383.8912507591. The cubic root of 28986285 is about 307.1832417989.

The spelling of 28986285 in words is "twenty-eight million, nine hundred eighty-six thousand, two hundred eighty-five".