285391052 has 12 divisors (see below), whose sum is σ = 499717680. Its totient is φ = 142614576.

The previous prime is 285391033. The next prime is 285391063. The reversal of 285391052 is 250193582.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11927 + ... + 26702.

It is an arithmetic number, because the mean of its divisors is an integer number (41643140).

Almost surely, 2^285391052 is an apocalyptic number.

It is an amenable number.

285391052 is a deficient number, since it is larger than the sum of its proper divisors (214326628).

285391052 is a wasteful number, since it uses less digits than its factorization.

285391052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40480 (or 40478 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 285391052 is about 16893.5210065871. The cubic root of 285391052 is about 658.3852875446.

The spelling of 285391052 in words is "two hundred eighty-five million, three hundred ninety-one thousand, fifty-two".