256099198 has 8 divisors (see below), whose sum is σ = 389011680. Its totient is φ = 126428640.

The previous prime is 256099187. The next prime is 256099219. The reversal of 256099198 is 891990652.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 810283 + ... + 810598.

It is an arithmetic number, because the mean of its divisors is an integer number (48626460).

Almost surely, 2^256099198 is an apocalyptic number.

256099198 is a deficient number, since it is larger than the sum of its proper divisors (132912482).

256099198 is a wasteful number, since it uses less digits than its factorization.

256099198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620962.

The product of its (nonzero) digits is 349920, while the sum is 49.

The square root of 256099198 is about 16003.0996372578. The cubic root of 256099198 is about 635.0424242638.

The spelling of 256099198 in words is "two hundred fifty-six million, ninety-nine thousand, one hundred ninety-eight".