256027289 has 16 divisors (see below), whose sum is σ = 300072960. Its totient is φ = 213872400.

The previous prime is 256027273. The next prime is 256027313. The reversal of 256027289 is 982720652.

256027289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 256027289 - 2⁴ = 256027273 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (256026289) 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, 221864 + ... + 223014.

It is an arithmetic number, because the mean of its divisors is an integer number (18754560).

Almost surely, 2^256027289 is an apocalyptic number.

It is an amenable number.

256027289 is a deficient number, since it is larger than the sum of its proper divisors (44045671).

256027289 is a wasteful number, since it uses less digits than its factorization.

256027289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1940.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 256027289 is about 16000.8527585251. The cubic root of 256027289 is about 634.9829817499.

The spelling of 256027289 in words is "two hundred fifty-six million, twenty-seven thousand, two hundred eighty-nine".