2256428856 has 32 divisors (see below), whose sum is σ = 6153897600. Its totient is φ = 683766240.

The previous prime is 2256428851. The next prime is 2256428873. The reversal of 2256428856 is 6588246522.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2256428851) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4273276 + ... + 4273803.

It is an arithmetic number, because the mean of its divisors is an integer number (192309300).

Almost surely, 2^2256428856 is an apocalyptic number.

It is an amenable number.

2256428856 is an abundant number, since it is smaller than the sum of its proper divisors (3897468744).

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

2256428856 is a wasteful number, since it uses less digits than its factorization.

2256428856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8547099 (or 8547095 counting only the distinct ones).

The product of its digits is 1843200, while the sum is 48.

The square root of 2256428856 is about 47501.8826574274. The cubic root of 2256428856 is about 1311.6175376737.

The spelling of 2256428856 in words is "two billion, two hundred fifty-six million, four hundred twenty-eight thousand, eight hundred fifty-six".