285717216 has 24 divisors (see below), whose sum is σ = 750007944. Its totient is φ = 95239040.

The previous prime is 285717191. The next prime is 285717221. The reversal of 285717216 is 612717582.

285717216 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488015 + ... + 1488206.

It is an arithmetic number, because the mean of its divisors is an integer number (31250331).

Almost surely, 2^285717216 is an apocalyptic number.

It is an amenable number.

285717216 is an abundant number, since it is smaller than the sum of its proper divisors (464290728).

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

285717216 is a wasteful number, since it uses less digits than its factorization.

285717216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976234 (or 2976226 counting only the distinct ones).

The product of its digits is 47040, while the sum is 39.

The square root of 285717216 is about 16903.1717733685. The cubic root of 285717216 is about 658.6360076499.

The spelling of 285717216 in words is "two hundred eighty-five million, seven hundred seventeen thousand, two hundred sixteen".