2278742256 has 90 divisors (see below), whose sum is σ = 7418530392. Its totient is φ = 651067200.

The previous prime is 2278742209. The next prime is 2278742267. The reversal of 2278742256 is 6522478722.

2278742256 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 154420 + ... + 168531.

Almost surely, 2^2278742256 is an apocalyptic number.

It is an amenable number.

2278742256 is an abundant number, since it is smaller than the sum of its proper divisors (5139788136).

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

2278742256 is a wasteful number, since it uses less digits than its factorization.

2278742256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322979 (or 322963 counting only the distinct ones).

The product of its digits is 752640, while the sum is 45.

The square root of 2278742256 is about 47736.1734536819. The cubic root of 2278742256 is about 1315.9268104762.

The spelling of 2278742256 in words is "two billion, two hundred seventy-eight million, seven hundred forty-two thousand, two hundred fifty-six".