256011783 has 16 divisors (see below), whose sum is σ = 350892000. Its totient is φ = 165960704.

The previous prime is 256011751. The next prime is 256011787. The reversal of 256011783 is 387110652.

256011783 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 256011783 - 2⁵ = 256011751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256011787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10843 + ... + 25091.

It is an arithmetic number, because the mean of its divisors is an integer number (21930750).

Almost surely, 2^256011783 is an apocalyptic number.

256011783 is a deficient number, since it is larger than the sum of its proper divisors (94880217).

256011783 is a wasteful number, since it uses less digits than its factorization.

256011783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14418.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 256011783 is about 16000.3682145131. The cubic root of 256011783 is about 634.9701624850.

The spelling of 256011783 in words is "two hundred fifty-six million, eleven thousand, seven hundred eighty-three".