285039216 has 480 divisors, whose sum is σ = 1108262400. Its totient is φ = 68428800.

The previous prime is 285039211. The next prime is 285039263. The reversal of 285039216 is 612930582.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285039211) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6952156 + ... + 6952196.

It is an arithmetic number, because the mean of its divisors is an integer number (2308880).

Almost surely, 2^285039216 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 285039216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (554131200).

285039216 is an abundant number, since it is smaller than the sum of its proper divisors (823223184).

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

285039216 is a wasteful number, since it uses less digits than its factorization.

285039216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 285039216 is about 16883.1044538616. The cubic root of 285039216 is about 658.1146192793.

Adding to 285039216 its reverse (612930582), we get a palindrome (897969798).

The spelling of 285039216 in words is "two hundred eighty-five million, thirty-nine thousand, two hundred sixteen".