856317948 has 48 divisors (see below), whose sum is σ = 2119509504. Its totient is φ = 268153600.

The previous prime is 856317919. The next prime is 856317949. The reversal of 856317948 is 849713658.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 856317948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (856317949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116173 + ... + 123323.

It is an arithmetic number, because the mean of its divisors is an integer number (44156448).

Almost surely, 2^856317948 is an apocalyptic number.

It is an amenable number.

856317948 is an abundant number, since it is smaller than the sum of its proper divisors (1263191556).

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

856317948 is a wasteful number, since it uses less digits than its factorization.

856317948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7762 (or 7760 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 856317948 is about 29262.9107916489. The cubic root of 856317948 is about 949.6094231916.

The spelling of 856317948 in words is "eight hundred fifty-six million, three hundred seventeen thousand, nine hundred forty-eight".