8210378256 has 20 divisors (see below), whose sum is σ = 21210143952. Its totient is φ = 2736792736.

The previous prime is 8210378237. The next prime is 8210378257. The reversal of 8210378256 is 6528730128.

It is a super-2 number, since 2×8210378256² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8210378257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85524726 + ... + 85524821.

Almost surely, 2^8210378256 is an apocalyptic number.

It is an amenable number.

8210378256 is an abundant number, since it is smaller than the sum of its proper divisors (12999765696).

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

8210378256 is a wasteful number, since it uses less digits than its factorization.

8210378256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171049558 (or 171049552 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 8210378256 is about 90611.1375935652. The cubic root of 8210378256 is about 2017.3800507574.

The spelling of 8210378256 in words is "eight billion, two hundred ten million, three hundred seventy-eight thousand, two hundred fifty-six".