862971056 has 80 divisors (see below), whose sum is σ = 1770958080. Its totient is φ = 406855680.

The previous prime is 862971037. The next prime is 862971059. The reversal of 862971056 is 650179268.

It is a junction number, because it is equal to n+sod(n) for n = 862970998 and 862971016.

It is not an unprimeable number, because it can be changed into a prime (862971059) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4988186 + ... + 4988358.

It is an arithmetic number, because the mean of its divisors is an integer number (22136976).

Almost surely, 2^862971056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 862971056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (885479040).

862971056 is an abundant number, since it is smaller than the sum of its proper divisors (907987024).

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

862971056 is a wasteful number, since it uses less digits than its factorization.

862971056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 862971056 is about 29376.3690063970. The cubic root of 862971056 is about 952.0623914574.

The spelling of 862971056 in words is "eight hundred sixty-two million, nine hundred seventy-one thousand, fifty-six".