285286928 has 60 divisors (see below), whose sum is σ = 593860800. Its totient is φ = 132727296.

The previous prime is 285286921. The next prime is 285286943. The reversal of 285286928 is 829682582.

It is not an unprimeable number, because it can be changed into a prime (285286921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 475973 + ... + 476571.

It is an arithmetic number, because the mean of its divisors is an integer number (9897680).

Almost surely, 2^285286928 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 285286928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296930400).

285286928 is an abundant number, since it is smaller than the sum of its proper divisors (308573872).

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

285286928 is a wasteful number, since it uses less digits than its factorization.

285286928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744 (or 721 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 50.

The square root of 285286928 is about 16890.4389522594. The cubic root of 285286928 is about 658.3052078924.

The spelling of 285286928 in words is "two hundred eighty-five million, two hundred eighty-six thousand, nine hundred twenty-eight".