286039728 has 240 divisors, whose sum is σ = 930877920. Its totient is φ = 83566080.

The previous prime is 286039727. The next prime is 286039763. The reversal of 286039728 is 827930682.

It is not an unprimeable number, because it can be changed into a prime (286039727) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5396950 + ... + 5397002.

It is an arithmetic number, because the mean of its divisors is an integer number (3878658).

Almost surely, 2^286039728 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 286039728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465438960).

286039728 is an abundant number, since it is smaller than the sum of its proper divisors (644838192).

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

286039728 is a wasteful number, since it uses less digits than its factorization.

286039728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 102 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 286039728 is about 16912.7090674439. The cubic root of 286039728 is about 658.8837329413.

The spelling of 286039728 in words is "two hundred eighty-six million, thirty-nine thousand, seven hundred twenty-eight".