285223250 has 128 divisors (see below), whose sum is σ = 628992000. Its totient is φ = 95904000.

The previous prime is 285223249. The next prime is 285223261. The reversal of 285223250 is 52322582.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1914176 + ... + 1914324.

It is an arithmetic number, because the mean of its divisors is an integer number (4914000).

Almost surely, 2^285223250 is an apocalyptic number.

285223250 is an abundant number, since it is smaller than the sum of its proper divisors (343768750).

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

285223250 is a wasteful number, since it uses less digits than its factorization.

285223250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 285223250 is about 16888.5538161206. The cubic root of 285223250 is about 658.2562248345.

The spelling of 285223250 in words is "two hundred eighty-five million, two hundred twenty-three thousand, two hundred fifty".