285839232 has 128 divisors (see below), whose sum is σ = 888264960. Its totient is φ = 79736832.

The previous prime is 285839227. The next prime is 285839233. The reversal of 285839232 is 232938582.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285839233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114348 + ... + 116820.

It is an arithmetic number, because the mean of its divisors is an integer number (6939570).

Almost surely, 2^285839232 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 285839232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444132480).

285839232 is an abundant number, since it is smaller than the sum of its proper divisors (602425728).

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

285839232 is a wasteful number, since it uses less digits than its factorization.

285839232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2540 (or 2528 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 285839232 is about 16906.7806515611. The cubic root of 285839232 is about 658.7297514981.

The spelling of 285839232 in words is "two hundred eighty-five million, eight hundred thirty-nine thousand, two hundred thirty-two".