856604250 has 48 divisors (see below), whose sum is σ = 2316263976. Its totient is φ = 228427200.

The previous prime is 856604237. The next prime is 856604261. The reversal of 856604250 is 52406658.

856604250 is a `hidden beast` number, since 8 + 566 + 0 + 42 + 50 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 319801689 + 536802561 = 17883^2 + 23169^2 .

It is a super-2 number, since 2×856604250² = 1467541682236125000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188107 + ... + 192606.

Almost surely, 2^856604250 is an apocalyptic number.

856604250 is an abundant number, since it is smaller than the sum of its proper divisors (1459659726).

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

856604250 is a wasteful number, since it uses less digits than its factorization.

856604250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380736 (or 380723 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 856604250 is about 29267.8022748549. The cubic root of 856604250 is about 949.7152424471.

The spelling of 856604250 in words is "eight hundred fifty-six million, six hundred four thousand, two hundred fifty".