256634882 has 16 divisors (see below), whose sum is σ = 444890880. Its totient is φ = 108750048.

The previous prime is 256634831. The next prime is 256634887. The reversal of 256634882 is 288436652.

It is a super-2 number, since 2×256634882² = 131722925318307848, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (256634887) 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 7 ways as a sum of consecutive naturals, for example, 101738 + ... + 104229.

It is an arithmetic number, because the mean of its divisors is an integer number (27805680).

Almost surely, 2^256634882 is an apocalyptic number.

256634882 is a deficient number, since it is larger than the sum of its proper divisors (188255998).

256634882 is a wasteful number, since it uses less digits than its factorization.

256634882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206065.

The product of its digits is 552960, while the sum is 44.

The square root of 256634882 is about 16019.8277768520. The cubic root of 256634882 is about 635.4848897316.

The spelling of 256634882 in words is "two hundred fifty-six million, six hundred thirty-four thousand, eight hundred eighty-two".