856246340 has 48 divisors (see below), whose sum is σ = 1814690304. Its totient is φ = 339360000.

The previous prime is 856246309. The next prime is 856246367. The reversal of 856246340 is 43642658.

It is a junction number, because it is equal to n+sod(n) for n = 856246294 and 856246303.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1410317 + ... + 1410923.

It is an arithmetic number, because the mean of its divisors is an integer number (37806048).

Almost surely, 2^856246340 is an apocalyptic number.

It is an amenable number.

856246340 is an abundant number, since it is smaller than the sum of its proper divisors (958443964).

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

856246340 is a wasteful number, since it uses less digits than its factorization.

856246340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148 (or 1146 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 856246340 is about 29261.6872377517. The cubic root of 856246340 is about 949.5829526783.

Adding to 856246340 its reverse (43642658), we get a palindrome (899888998).

The spelling of 856246340 in words is "eight hundred fifty-six million, two hundred forty-six thousand, three hundred forty".