2256782478 has 8 divisors (see below), whose sum is σ = 4513564968. Its totient is φ = 752260824.

The previous prime is 2256782467. The next prime is 2256782497. The reversal of 2256782478 is 8742876522.

It is a sphenic number, since it is the product of 3 distinct primes.

2256782478 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 2256782478.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 188065201 + ... + 188065212.

It is an arithmetic number, because the mean of its divisors is an integer number (564195621).

Almost surely, 2^2256782478 is an apocalyptic number.

2256782478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2256782478 is a wasteful number, since it uses less digits than its factorization.

2256782478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376130418.

The product of its digits is 3010560, while the sum is 51.

The square root of 2256782478 is about 47505.6047009192. The cubic root of 2256782478 is about 1311.6860519233.

The spelling of 2256782478 in words is "two billion, two hundred fifty-six million, seven hundred eighty-two thousand, four hundred seventy-eight".