285768704 has 44 divisors (see below), whose sum is σ = 615229944. Its totient is φ = 131887104.

The previous prime is 285768701. The next prime is 285768737. The reversal of 285768704 is 407867582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285768701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2579 + ... + 24045.

Almost surely, 2^285768704 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 285768704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307614972).

285768704 is an abundant number, since it is smaller than the sum of its proper divisors (329461240).

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

285768704 is a wasteful number, since it uses less digits than its factorization.

285768704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21500 (or 21482 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 47.

The square root of 285768704 is about 16904.6947325292. The cubic root of 285768704 is about 658.6755686938.

The spelling of 285768704 in words is "two hundred eighty-five million, seven hundred sixty-eight thousand, seven hundred four".