2256404786 has 16 divisors (see below), whose sum is σ = 3395200536. Its totient is φ = 1124678016.

The previous prime is 2256404753. The next prime is 2256404789. The reversal of 2256404786 is 6874046522.

It can be written as a sum of positive squares in 4 ways, for example, as 171112561 + 2085292225 = 13081^2 + 45665^2 .

It is not an unprimeable number, because it can be changed into a prime (2256404789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1377560 + ... + 1379196.

Almost surely, 2^2256404786 is an apocalyptic number.

2256404786 is a deficient number, since it is larger than the sum of its proper divisors (1138795750).

2256404786 is a wasteful number, since it uses less digits than its factorization.

2256404786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373.

The product of its (nonzero) digits is 645120, while the sum is 44.

The square root of 2256404786 is about 47501.6292983725. The cubic root of 2256404786 is about 1311.6128738518.

The spelling of 2256404786 in words is "two billion, two hundred fifty-six million, four hundred four thousand, seven hundred eighty-six".