285263872 has 48 divisors (see below), whose sum is σ = 600490800. Its totient is φ = 135106560.

The previous prime is 285263857. The next prime is 285263903. The reversal of 285263872 is 278362582.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35247 + ... + 42577.

It is an arithmetic number, because the mean of its divisors is an integer number (12510225).

Almost surely, 2^285263872 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 285263872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (300245400).

285263872 is an abundant number, since it is smaller than the sum of its proper divisors (315226928).

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

285263872 is an equidigital number, since it uses as much as digits as its factorization.

285263872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7372 (or 7352 counting only the distinct ones).

The product of its digits is 322560, while the sum is 43.

The square root of 285263872 is about 16889.7564221631. The cubic root of 285263872 is about 658.2874733566.

The spelling of 285263872 in words is "two hundred eighty-five million, two hundred sixty-three thousand, eight hundred seventy-two".