285022224 has 30 divisors (see below), whose sum is σ = 797666766. Its totient is φ = 95007360.

The previous prime is 285022223. The next prime is 285022229. The reversal of 285022224 is 422220582.

It can be written as a sum of positive squares in only one way, i.e., 282240000 + 2782224 = 16800^2 + 1668^2 .

It is not an unprimeable number, because it can be changed into a prime (285022223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 989517 + ... + 989804.

Almost surely, 2^285022224 is an apocalyptic number.

285022224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

285022224 is an abundant number, since it is smaller than the sum of its proper divisors (512644542).

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

285022224 is a wasteful number, since it uses less digits than its factorization.

285022224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979335 (or 1979326 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 285022224 is about 16882.6012213758. The cubic root of 285022224 is about 658.1015416567.

The spelling of 285022224 in words is "two hundred eighty-five million, twenty-two thousand, two hundred twenty-four".