28285836 has 12 divisors (see below), whose sum is σ = 66000312. Its totient is φ = 9428608.

The previous prime is 28285811. The next prime is 28285843. The reversal of 28285836 is 63858282.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1178565 + ... + 1178588.

It is an arithmetic number, because the mean of its divisors is an integer number (5500026).

Almost surely, 2^28285836 is an apocalyptic number.

It is an amenable number.

28285836 is an abundant number, since it is smaller than the sum of its proper divisors (37714476).

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

28285836 is a wasteful number, since it uses less digits than its factorization.

28285836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357160 (or 2357158 counting only the distinct ones).

The product of its digits is 184320, while the sum is 42.

The square root of 28285836 is about 5318.4430052413. The cubic root of 28285836 is about 304.6886942807.

The spelling of 28285836 in words is "twenty-eight million, two hundred eighty-five thousand, eight hundred thirty-six".