256134339 has 32 divisors (see below), whose sum is σ = 390358080. Its totient is φ = 165888000.

The previous prime is 256134331. The next prime is 256134343. The reversal of 256134339 is 933431652.

It is a happy number.

256134339 is a `hidden beast` number, since 2 + 5 + 613 + 4 + 3 + 39 = 666.

It is not a de Polignac number, because 256134339 - 2³ = 256134331 is a prime.

It is a super-2 number, since 2×256134339² = 131209599229933842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256134331) 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 31 ways as a sum of consecutive naturals, for example, 443619 + ... + 444195.

It is an arithmetic number, because the mean of its divisors is an integer number (12198690).

Almost surely, 2^256134339 is an apocalyptic number.

256134339 is a deficient number, since it is larger than the sum of its proper divisors (134223741).

256134339 is a wasteful number, since it uses less digits than its factorization.

256134339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028 (or 1022 counting only the distinct ones).

The product of its digits is 58320, while the sum is 36.

The square root of 256134339 is about 16004.1975431447. The cubic root of 256134339 is about 635.0714690055.

The spelling of 256134339 in words is "two hundred fifty-six million, one hundred thirty-four thousand, three hundred thirty-nine".