28985286 has 16 divisors (see below), whose sum is σ = 63240768. Its totient is φ = 8783400.

The previous prime is 28985273. The next prime is 28985303. The reversal of 28985286 is 68258982.

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 7 ways as a sum of consecutive naturals, for example, 219520 + ... + 219651.

It is an arithmetic number, because the mean of its divisors is an integer number (3952548).

Almost surely, 2^28985286 is an apocalyptic number.

28985286 is an abundant number, since it is smaller than the sum of its proper divisors (34255482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28985286 is a wasteful number, since it uses less digits than its factorization.

28985286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439187.

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

The square root of 28985286 is about 5383.7984731972. The cubic root of 28985286 is about 307.1797127784.

The spelling of 28985286 in words is "twenty-eight million, nine hundred eighty-five thousand, two hundred eighty-six".