285550398 has 48 divisors (see below), whose sum is σ = 716052480. Its totient is φ = 80550288.

The previous prime is 285550381. The next prime is 285550417. The reversal of 285550398 is 893055582.

285550398 is a `hidden beast` number, since 2 + 8 + 5 + 550 + 3 + 98 = 666.

285550398 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 (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4390 + ... + 24297.

It is an arithmetic number, because the mean of its divisors is an integer number (14917760).

Almost surely, 2^285550398 is an apocalyptic number.

285550398 is an abundant number, since it is smaller than the sum of its proper divisors (430502082).

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

285550398 is a wasteful number, since it uses less digits than its factorization.

285550398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28781 (or 28778 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 45.

The square root of 285550398 is about 16898.2365352128. The cubic root of 285550398 is about 658.5077996112.

The spelling of 285550398 in words is "two hundred eighty-five million, five hundred fifty thousand, three hundred ninety-eight".