2256040128 has 56 divisors (see below), whose sum is σ = 6161674240. Its totient is φ = 727752960.

The previous prime is 2256040099. The next prime is 2256040187. The reversal of 2256040128 is 8210406522.

It is a junction number, because it is equal to n+sod(n) for n = 2256040095 and 2256040104.

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, 183568 + ... + 195471.

Almost surely, 2^2256040128 is an apocalyptic number.

It is an amenable number.

2256040128 is an abundant number, since it is smaller than the sum of its proper divisors (3905634112).

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

2256040128 is a wasteful number, since it uses less digits than its factorization.

2256040128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379085 (or 379075 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 2256040128 is about 47497.7907696769. The cubic root of 2256040128 is about 1311.5422133778.

The spelling of 2256040128 in words is "two billion, two hundred fifty-six million, forty thousand, one hundred twenty-eight".