856726892 has 24 divisors (see below), whose sum is σ = 1731123744. Its totient is φ = 363382272.

The previous prime is 856726889. The next prime is 856726901. The reversal of 856726892 is 298627658.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155003 + ... + 160434.

It is an arithmetic number, because the mean of its divisors is an integer number (72130156).

Almost surely, 2^856726892 is an apocalyptic number.

It is an amenable number.

856726892 is an abundant number, since it is smaller than the sum of its proper divisors (874396852).

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

856726892 is a wasteful number, since it uses less digits than its factorization.

856726892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315545 (or 315543 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 53.

The square root of 856726892 is about 29269.8973691402. The cubic root of 856726892 is about 949.7605645892.

The spelling of 856726892 in words is "eight hundred fifty-six million, seven hundred twenty-six thousand, eight hundred ninety-two".