256635334 has 16 divisors (see below), whose sum is σ = 403004160. Its totient is φ = 122337160.

The previous prime is 256635331. The next prime is 256635341. The reversal of 256635334 is 433536652.

It is a junction number, because it is equal to n+sod(n) for n = 256635293 and 256635302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256635331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5337 + ... + 23275.

It is an arithmetic number, because the mean of its divisors is an integer number (25187760).

Almost surely, 2^256635334 is an apocalyptic number.

256635334 is a deficient number, since it is larger than the sum of its proper divisors (146368826).

256635334 is a wasteful number, since it uses less digits than its factorization.

256635334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18275.

The product of its digits is 194400, while the sum is 37.

The square root of 256635334 is about 16019.8418843633. The cubic root of 256635334 is about 635.4852628155.

The spelling of 256635334 in words is "two hundred fifty-six million, six hundred thirty-five thousand, three hundred thirty-four".