285365850 has 192 divisors, whose sum is σ = 911941632. Its totient is φ = 57312000.

The previous prime is 285365789. The next prime is 285365879. The reversal of 285365850 is 58563582.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 95 ways as a sum of consecutive naturals, for example, 357652 + ... + 358448.

It is an arithmetic number, because the mean of its divisors is an integer number (4749696).

Almost surely, 2^285365850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285365850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455970816).

285365850 is an abundant number, since it is smaller than the sum of its proper divisors (626575782).

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

285365850 is a wasteful number, since it uses less digits than its factorization.

285365850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861 (or 856 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 42.

The square root of 285365850 is about 16892.7750828572. The cubic root of 285365850 is about 658.3659069855.

The spelling of 285365850 in words is "two hundred eighty-five million, three hundred sixty-five thousand, eight hundred fifty".