856213286 has 8 divisors (see below), whose sum is σ = 1298750760. Its totient is φ = 423296368.

The previous prime is 856213271. The next prime is 856213289. The reversal of 856213286 is 682312658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×856213286² = 1466202382245835592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856213289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2404916 + ... + 2405271.

It is an arithmetic number, because the mean of its divisors is an integer number (162343845).

Almost surely, 2^856213286 is an apocalyptic number.

856213286 is a deficient number, since it is larger than the sum of its proper divisors (442537474).

856213286 is a wasteful number, since it uses less digits than its factorization.

856213286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4810278.

The product of its digits is 138240, while the sum is 41.

The square root of 856213286 is about 29261.1224323333. The cubic root of 856213286 is about 949.5707334849.

The spelling of 856213286 in words is "eight hundred fifty-six million, two hundred thirteen thousand, two hundred eighty-six".