256195178 has 16 divisors (see below), whose sum is σ = 395362944. Its totient is φ = 124419600.

The previous prime is 256195153. The next prime is 256195217. The reversal of 256195178 is 871591652.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45203 + ... + 50553.

It is an arithmetic number, because the mean of its divisors is an integer number (24710184).

Almost surely, 2^256195178 is an apocalyptic number.

256195178 is a deficient number, since it is larger than the sum of its proper divisors (139167766).

256195178 is a wasteful number, since it uses less digits than its factorization.

256195178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037.

The product of its digits is 151200, while the sum is 44.

The square root of 256195178 is about 16006.0981503926. The cubic root of 256195178 is about 635.1217473796.

The spelling of 256195178 in words is "two hundred fifty-six million, one hundred ninety-five thousand, one hundred seventy-eight".