28005850 has 12 divisors (see below), whose sum is σ = 52090974. Its totient is φ = 11202320.

The previous prime is 28005847. The next prime is 28005869. The reversal of 28005850 is 5850082.

It can be written as a sum of positive squares in 3 ways, for example, as 14145121 + 13860729 = 3761^2 + 3723^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280009 + ... + 280108.

Almost surely, 2^28005850 is an apocalyptic number.

28005850 is a deficient number, since it is larger than the sum of its proper divisors (24085124).

28005850 is a wasteful number, since it uses less digits than its factorization.

28005850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560129 (or 560124 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 28005850 is about 5292.0553663015. The cubic root of 28005850 is about 303.6800433881.

The spelling of 28005850 in words is "twenty-eight million, five thousand, eight hundred fifty".