285820266 has 16 divisors (see below), whose sum is σ = 585583488. Its totient is φ = 92949600.

The previous prime is 285820253. The next prime is 285820267. The reversal of 285820266 is 662028582.

285820266 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (285820267) by changing a digit.

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, 580690 + ... + 581181.

It is an arithmetic number, because the mean of its divisors is an integer number (36598968).

Almost surely, 2^285820266 is an apocalyptic number.

285820266 is an abundant number, since it is smaller than the sum of its proper divisors (299763222).

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

285820266 is a wasteful number, since it uses less digits than its factorization.

285820266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161917.

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 285820266 is about 16906.2197430413. The cubic root of 285820266 is about 658.7151818340.

The spelling of 285820266 in words is "two hundred eighty-five million, eight hundred twenty thousand, two hundred sixty-six".