256784198 has 8 divisors (see below), whose sum is σ = 420192360. Its totient is φ = 116720080.

The previous prime is 256784161. The next prime is 256784219. The reversal of 256784198 is 891487652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5835983 + ... + 5836026.

It is an arithmetic number, because the mean of its divisors is an integer number (52524045).

Almost surely, 2^256784198 is an apocalyptic number.

256784198 is a deficient number, since it is larger than the sum of its proper divisors (163408162).

256784198 is a wasteful number, since it uses less digits than its factorization.

256784198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11672022.

The product of its digits is 967680, while the sum is 50.

The square root of 256784198 is about 16024.4874489014. The cubic root of 256784198 is about 635.6081123483.

The spelling of 256784198 in words is "two hundred fifty-six million, seven hundred eighty-four thousand, one hundred ninety-eight".