856970308 has 12 divisors (see below), whose sum is σ = 1499911420. Its totient is φ = 428424192.

The previous prime is 856970299. The next prime is 856970311. The reversal of 856970308 is 803079658.

It can be written as a sum of positive squares in 2 ways, for example, as 63872064 + 793098244 = 7992^2 + 28162^2 .

It is a super-2 number, since 2×856970308² = 1468796217587229728, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 34228 + ... + 53716.

Almost surely, 2^856970308 is an apocalyptic number.

It is an amenable number.

856970308 is a deficient number, since it is larger than the sum of its proper divisors (642941112).

856970308 is a wasteful number, since it uses less digits than its factorization.

856970308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30486 (or 30484 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 856970308 is about 29274.0552025168. The cubic root of 856970308 is about 949.8505057470.

The spelling of 856970308 in words is "eight hundred fifty-six million, nine hundred seventy thousand, three hundred eight".