285250172 has 12 divisors (see below), whose sum is σ = 500382120. Its totient is φ = 142283856.

The previous prime is 285250171. The next prime is 285250183. The reversal of 285250172 is 271052582.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285250171) 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, 83423 + ... + 86774.

It is an arithmetic number, because the mean of its divisors is an integer number (41698510).

Almost surely, 2^285250172 is an apocalyptic number.

It is an amenable number.

285250172 is a deficient number, since it is larger than the sum of its proper divisors (215131948).

285250172 is a wasteful number, since it uses less digits than its factorization.

285250172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170620 (or 170618 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 285250172 is about 16889.3508460213. The cubic root of 285250172 is about 658.2769349467.

The spelling of 285250172 in words is "two hundred eighty-five million, two hundred fifty thousand, one hundred seventy-two".