285304304 has 40 divisors (see below), whose sum is σ = 583415040. Its totient is φ = 134785728.

The previous prime is 285304301. The next prime is 285304309. The reversal of 285304304 is 403403582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285304301) 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, 139739 + ... + 141765.

It is an arithmetic number, because the mean of its divisors is an integer number (14585376).

Almost surely, 2^285304304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 285304304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (291707520).

285304304 is an abundant number, since it is smaller than the sum of its proper divisors (298110736).

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

285304304 is a wasteful number, since it uses less digits than its factorization.

285304304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2517 (or 2511 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 285304304 is about 16890.9533182707. The cubic root of 285304304 is about 658.3185727752.

Adding to 285304304 its reverse (403403582), we get a palindrome (688707886).

The spelling of 285304304 in words is "two hundred eighty-five million, three hundred four thousand, three hundred four".