285638832 has 40 divisors (see below), whose sum is σ = 819890480. Its totient is φ = 95212800.

The previous prime is 285638813. The next prime is 285638833. The reversal of 285638832 is 238836582.

285638832 is a `hidden beast` number, since 2 + 8 + 5 + 638 + 8 + 3 + 2 = 666.

285638832 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (285638833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330169 + ... + 331032.

It is an arithmetic number, because the mean of its divisors is an integer number (20497262).

Almost surely, 2^285638832 is an apocalyptic number.

It is an amenable number.

285638832 is an abundant number, since it is smaller than the sum of its proper divisors (534251648).

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

285638832 is a wasteful number, since it uses less digits than its factorization.

285638832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661218 (or 661206 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 285638832 is about 16900.8529962248. The cubic root of 285638832 is about 658.5757718133.

The spelling of 285638832 in words is "two hundred eighty-five million, six hundred thirty-eight thousand, eight hundred thirty-two".