856953752 has 16 divisors (see below), whose sum is σ = 1626148440. Its totient is φ = 423314176.

The previous prime is 856953733. The next prime is 856953787. The reversal of 856953752 is 257359658.

It is a self number, because there is not a number n which added to its sum of digits gives 856953752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 644633 + ... + 645960.

Almost surely, 2^856953752 is an apocalyptic number.

It is an amenable number.

856953752 is a deficient number, since it is larger than the sum of its proper divisors (769194688).

856953752 is a wasteful number, since it uses less digits than its factorization.

856953752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290682 (or 1290678 counting only the distinct ones).

The product of its digits is 2268000, while the sum is 50.

The square root of 856953752 is about 29273.7724251590. The cubic root of 856953752 is about 949.8443889166.

The spelling of 856953752 in words is "eight hundred fifty-six million, nine hundred fifty-three thousand, seven hundred fifty-two".