856291148 has 24 divisors (see below), whose sum is σ = 1541244432. Its totient is φ = 415969344.

The previous prime is 856291123. The next prime is 856291151. The reversal of 856291148 is 841192658.

It is a junction number, because it is equal to n+sod(n) for n = 856291099 and 856291108.

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, 108215 + ... + 115857.

It is an arithmetic number, because the mean of its divisors is an integer number (64218518).

Almost surely, 2^856291148 is an apocalyptic number.

It is an amenable number.

856291148 is a deficient number, since it is larger than the sum of its proper divisors (684953284).

856291148 is a wasteful number, since it uses less digits than its factorization.

856291148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8441 (or 8439 counting only the distinct ones).

The product of its digits is 138240, while the sum is 44.

The square root of 856291148 is about 29262.4528705302. The cubic root of 856291148 is about 949.5995165138.

The spelling of 856291148 in words is "eight hundred fifty-six million, two hundred ninety-one thousand, one hundred forty-eight".