856240228 has 48 divisors (see below), whose sum is σ = 1632306816. Its totient is φ = 391888640.

The previous prime is 856240193. The next prime is 856240237. The reversal of 856240228 is 822042658.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 197775 + ... + 202057.

It is an arithmetic number, because the mean of its divisors is an integer number (34006392).

Almost surely, 2^856240228 is an apocalyptic number.

It is an amenable number.

856240228 is a deficient number, since it is larger than the sum of its proper divisors (776066588).

856240228 is a wasteful number, since it uses less digits than its factorization.

856240228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4404 (or 4402 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 856240228 is about 29261.5828006620. The cubic root of 856240228 is about 949.5806932565.

The spelling of 856240228 in words is "eight hundred fifty-six million, two hundred forty thousand, two hundred twenty-eight".