285328686 has 16 divisors (see below), whose sum is σ = 571152384. Its totient is φ = 95027064.

The previous prime is 285328657. The next prime is 285328711. The reversal of 285328686 is 686823582.

285328686 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 12910 + ... + 27153.

It is an arithmetic number, because the mean of its divisors is an integer number (35697024).

Almost surely, 2^285328686 is an apocalyptic number.

285328686 is an abundant number, since it is smaller than the sum of its proper divisors (285823698).

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

285328686 is a wasteful number, since it uses less digits than its factorization.

285328686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41255.

The product of its digits is 1105920, while the sum is 48.

The square root of 285328686 is about 16891.6750501541. The cubic root of 285328686 is about 658.3373254614.

The spelling of 285328686 in words is "two hundred eighty-five million, three hundred twenty-eight thousand, six hundred eighty-six".