285855894 has 12 divisors (see below), whose sum is σ = 619354476. Its totient is φ = 95285292.

The previous prime is 285855881. The next prime is 285855907. The reversal of 285855894 is 498558582.

It is a happy number.

285855894 is a `hidden beast` number, since 2 + 8 + 58 + 5 + 589 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (285855881) and next prime (285855907).

It is a self number, because there is not a number n which added to its sum of digits gives 285855894.

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 5 ways as a sum of consecutive naturals, for example, 7940424 + ... + 7940459.

It is an arithmetic number, because the mean of its divisors is an integer number (51612873).

Almost surely, 2^285855894 is an apocalyptic number.

285855894 is an abundant number, since it is smaller than the sum of its proper divisors (333498582).

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

285855894 is a wasteful number, since it uses less digits than its factorization.

285855894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15880891 (or 15880888 counting only the distinct ones).

The product of its digits is 4608000, while the sum is 54.

The square root of 285855894 is about 16907.2734052537. The cubic root of 285855894 is about 658.7425506997.

The spelling of 285855894 in words is "two hundred eighty-five million, eight hundred fifty-five thousand, eight hundred ninety-four".