856422850 has 12 divisors (see below), whose sum is σ = 1592946594. Its totient is φ = 342569120.

The previous prime is 856422817. The next prime is 856422851. The reversal of 856422850 is 58224658.

It can be written as a sum of positive squares in 3 ways, for example, as 647244481 + 209178369 = 25441^2 + 14463^2 .

It is not an unprimeable number, because it can be changed into a prime (856422851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8564179 + ... + 8564278.

Almost surely, 2^856422850 is an apocalyptic number.

856422850 is a deficient number, since it is larger than the sum of its proper divisors (736523744).

856422850 is a wasteful number, since it uses less digits than its factorization.

856422850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17128469 (or 17128464 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The square root of 856422850 is about 29264.7031421814. The cubic root of 856422850 is about 949.6481984544.

The spelling of 856422850 in words is "eight hundred fifty-six million, four hundred twenty-two thousand, eight hundred fifty".